A football player carrying the ball runs straight ahead at the line of scrimmage and directly into a wall of defensive linemen. The ball carrier has an initial speed of 7.68 m/s and is stopped in a time interval of 0.202 s. Find the magnitude and direction of his average acceleration.

Answers

Answer 1

Final answer:

The magnitude of the average acceleration the football player experiences is 38.02 m/s², and the direction of the acceleration is backward, towards the line of scrimmage.

Explanation:

To calculate the magnitude and direction of the average acceleration experienced by the football player, we use the following kinematic equation:

a = (v_f - v_i) / t

Where:

v_f is the final velocityv_i is the initial velocityt is the time taken to stop

Given:

v_i = 7.68 m/s (Initial speed of the player)v_f = 0 m/s (The player comes to a stop)t = 0.202 s (Time interval)

Now we can plug these values into our equation to find a:

a = (0 - 7.68 m/s) / 0.202 s

a = -7.68 m/s / 0.202 s

a = -38.02 m/s2

The negative sign indicates that the acceleration is in the opposite direction of the player's initial motion. Since the player was moving forward and came to a stop, the acceleration is directed backward, towards the line of scrimmage.


Related Questions

Your skeleton. It is there for support, protection, and movement. But you could not move your bones without the help of your ______________ system. A) digestive B) gland C) immune D) muscular\

Answers

I believe the answer is D.) the muscular system
The answer would be 
D) muscular

85) List and discuss the structures of a long bone. 86) Discuss the organization of the five regions of the spine. 87) Explain how atlas and axis are different from other vertebrae. Discuss the roles they play in the body. 88) Differentiate among the three types of joints based on structural and functional classification. Provide examples of each type of joint.

Answers

85)
The bone structure from outside would be periosteum, cortical, cancellous then medulla. Periosteum is the area outside the bone that will supply nutrition into the outer part of the bone. Cortical is the layer where bone mineral deposition is intense. In this part, the bone is compact and hard. This is the part of the bone that has great strength.
Cancellous is part of the bone where it is not too hard but not too soft. Mineralization is not so dense like cortical layer. That makes this part looks spongy. 
In the medulla, most part is made from connective tissue and blood vessels. This part is responsible for the bone vascularization, which means the supply of mineral to the outer part is coming from the medulla. Mineralization is not much in the medulla, makes it not strong. Medulla or marrow also makes blood cells.

86)
The region of the spine would be cervical(neck), thoracal(chest), lumbar(back), sacrum then coccyx. The vertebrae in the neck are smaller since it did not need much strength but need more mobility. Lower part on the thoracal and lumbar is bigger and have a bigger process that will further stabilize the vertebrae. Thoracal vertebrae have a part on their side where the ribs attached. Sacrum shape was a kinda weird because it needs to be able to connect with the pelvis to make buttock. Coccyx the tailbone look like just a small remnant and doesn't seem to have a function in human.

87)
Axis is the name of cervical 2nd vertebral which was located below the atlas, 1st cervical vertebrae. Both of them doesn't have spinal processes that were stabilizing the side of vertebrae Axis also has an odontoid peg which will make the joint with atlas more flexible.
This effect makes the neck can turn to side easily. It also makes neck more mobile vertically, make a nodding movement is possible.
88)
Thre kind of joints would be: Synarthrosis, amphiarthrosis, and diarthrosis.
In synarthrosis, the joint mostly made by fibrous so that it can move. The example of this joint would be suture in the skull. In children, the skull joint is not closed to permit the head to grow but in the adult, it is closed. 
Amphiarthrosis joint permits a small movement. This included the intervertebral disc.
Diarthrosis permit a wide degree of movement. This joint is more complex because it has the synovial membrane. The complex structure makes the joints more durable to shock. This was vital because organ with this join used frequently. The example of this joints would be femur and pelvic(hip) joints. Joints in arm and leg mostly diarthrosis joint.

Consider a box sitting in the back of a pickup. The pickup accelerates to the right, and because the bed of the pickup is sticky, the box does not slide around the truck when this happens.What direction is the force acting on the box due to the truck?

Answers

Final answer:

The force acting on a box in the back of a pickup truck, which accelerates forward, is due to static friction and is directed forward. This force ensures the box accelerates at the same rate as the truck, preventing it from sliding.

Explanation:

When a pickup truck accelerates forward, the force acting on a box due to the truck is directed forward. This force is the result of static friction between the box and the bed of the truck. The static friction force prevents the box from slipping by providing the necessary force to accelerate the box at the same rate as the truck. If the truck accelerates to the right, the frictional force acting on the box is also to the right. This force is a reaction to the box's tendency to remain in its state of rest, according to Newton's first law of motion, which says that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.

The calculation of the maximum distance the truck can travel without the box sliding involves determining the static frictional force and using it to find the acceleration of the box. Given the coefficient of static friction (μ) is 0.24, and assuming the acceleration of gravity (g) is approximately 9.8 m/s², we use the equation for static friction F_s = μ N, where N is the normal force, equivalent to the weight of the box if we assume a horizontal surface and neglect air resistance.

The key to understanding this problem lies in recognizing the role of static friction in causing the box to accelerate together with the truck, rather than sliding. If the bed of the truck provides sufficient friction, it enables the box to move as one with the vehicle, demonstrating the practical application of Newton's laws of motion.

The force acting on the box due to the truck is directed to the right.

When the pickup truck accelerates to the right, a force is exerted on the box due to the truck bed's friction. Since the bed of the truck is sticky, the box does not slide. The direction of the frictional force acting on the box is also to the right, in the same direction as the truck's acceleration.

Here's a step-by-step explanation:

The truck accelerates to the right.The surface of the truck bed exerts a frictional force on the bottom of the box to prevent it from sliding.This frictional force acts to the right, matching the truck's acceleration direction.According to Newton's third law of motion, every action has an equal and opposite reaction, so the box exerts a force back on the truck bed, but this doesn’t change the direction of the frictional force acting on the box.

Therefore, the force acting on the box due to the truck is to the right.

How do aerobic and anaerobic respiration compare?

Answers

anaerobic exercises do not need a lot of energy and no not make you short of breath, aerobic exercises make you short of breath and require more energy 

Alright well aerobic respiration is very efficient and produces a large amount of energy while in the other hand anaerobic respiration is not very efficient and produces a large amount of energy.

Well Hope this helps have a nice day :)

An increase in wind speed will cause the temperature of a leaf to ______. assume all other parameters of the leaf environment remain unchanged.

Answers

decrease. as the temperature is effected by 1. air humidity 2. air movement 3. light and so on

Each of the three plates has a mass of 10 kg. if the coefficients of static and kinetic friction at each surface of contact are μs = 0.3 and μk = 0.2 , respectively, determine the acceleration of each plate when the three horizontal forces are applied.

Answers

Even though you forgot to include the diagram of the problem, I found a similar problem as shown in the top of the picture. The diagrams at the bottom are force diagrams of each plate.

For plate D, the forces acting on it are the horizontal force 18 N, and the opposite frictional force which is equal to uk*W = 0.2(10 kg)(9.81 m/s²) = 19.62 N.
F = ma
19.62 N - 18 N = 10 kg(a)
a = 0.162 m/s²

For plate C, the forces acting on it are: horizontal 100 N, and the two opposite frictional forces from the top and bottom plates D and B.
F = ma
100 N - 2(19.62 N) = (10 kg)(a)
a = 6.076 m/s²

For plate B, because A is not moving, we use us instead of uk.
F = ma
0.3(10 kg)(9.81 m/s²) - 15 N = (10 kg)(a)
a = 2.943 m/s²

Final answer:

To calculate the acceleration of each plate, first find the force of kinetic friction using the mass of the plates and coefficients of friction. The acceleration can then be found by applying Newton's second law, considering the net force on each plate after friction is taken into account.

Explanation:

To determine the acceleration of each plate when three horizontal forces are applied, we first need to understand the role of static and kinetic friction. Given each plate has a mass of 10 kg, we can calculate the normal force (N) exerted by each plate, which is necessary for finding frictional forces. The normal force is equal to the weight of the plate, calculated as N = mg, where m is the mass and g is the acceleration due to gravity (9.8 m/s2). Thus, for a 10 kg plate, N = 10 kg × 9.8 m/s2 = 98 N.

The maximum static friction force that must be overcome to start moving the plate is calculated using Fₛ(max) = μsN, where μs is the coefficient of static friction (0.3). Therefore, Fₛ(max) = 0.3 × 98 N = 29.4 N. Once motion begins, the kinetic friction force applies, calculated using Fₘ = μkN, where μk is the coefficient of kinetic friction (0.2). Therefore, Fₘ = 0.2 × 98 N = 19.6 N. To find the acceleration of each plate, we apply Newton's second law of motion (F = ma), subtracting the kinetic friction force from the applied force, and solving for a.

Without specific values for the applied forces in the question, we've laid out the framework to calculate the acceleration. It's important to subtract the kinetic friction force from the applied force to find the net force before applying Newton's second law.

A ball rolls 6.0 meters as its speed changes from 15 meters per second to 10 meters per second. What is the average speed of the ball as it rolls the 10 meters? 1) 2.5m/s 2) 10m/s 3) 12.5m/s 4) 15m/s (Please show calculation)

Answers

Initial speed, u = 15 m/s
Final speed, v = 10 m/s
Distance traveled, s = 6.0 m

The acceleration, a, is determined from
u² + 2as = v²
(15 m/s)² + 2*(a m/s²)*(6.0 m) = (10 m/s)²
225 + 12a = 100
12a = -125
a = -10.4167 m/s²

The time, t, for the velocity to change from 15 m/s to 10 m/s is given by
(10 m/s) = (15 m/s) - (10.4167 m/s²)*(t s)
10 = 15 - 10.4167t
t = 0.48 s

The average speed is
(6.0 m)/(0.48 s) = 12.5 m/s

Answer: 12.5 m/s

The average speed of the ball cannot be accurately determined without the total time or rate of deceleration. However, if we are simply looking for the average of the initial and final speeds, it would be 12.5 m/s.

The question involves calculating the average speed of a ball given its initial and final speeds. However, there is a discrepancy in the question as it initially mentions the ball rolls 6.0 meters but then asks for the average speed over 10 meters. Assuming the correct distance is 6.0 meters, the calculation of average speed requires us to know the total distance traveled and the total time taken.

To find the average speed, we use the formula:

Average Speed = Total Distance ÷ Total Time

The total distance traveled by the ball is given as 6.0 meters. Since we do not have the total time, we cannot calculate the average speed directly. Additionally, it's said that the ball's speed changes from 15 m/s to 10 m/s, which means that it is decelerating. However, with the information provided, we cannot accurately determine the ball's average speed without additional details such as the rate of deceleration or the time taken.

Assuming a typo in the question and that it's asking for the average of the initial and final speeds instead, we could simply calculate it by:

Average Speed = (Initial Speed + Final Speed) ÷ 2

In this case:

Average Speed = (15 m/s + 10 m/s) ÷ 2 = 12.5 m/s

However, this calculation assumes a linear change of speed, which might not be the case in a real-world scenario.

The cable is drawn into the motor with an acceleration of 7 m/s2 determine the time needed for the load at b to attain a speed of 10 m/s, starting from rest.

Answers

Final answer:

Using the basic equation of motion v = u + at, and considering the load starts from rest (u=0), we find it takes approximately 1.43 seconds for the load to attain a speed of 10 m/s when accelerating uniformly at 7 m/s².

Explanation:

The student wants to know the amount of time it takes for a load at point B to achieve a speed of 10 m/s, given that it starts from rest and accelerates uniformly at a rate of 7 m/s². This problem can be solved using one of the basic equations of motion, specifically, the formula v = u + at, where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time. Since the load is starting from rest, u = 0. Hence, the equation becomes v = at. Substituting the given values (v = 10 m/s, a = 7 m/s²), we can solve for t = v / a, which gives t = 10 / 7 = 1.43 seconds. So, it will take approximately 1.43 seconds for the load to attain a speed of 10 m/s.

Learn more about Motion and Time here:

https://brainly.com/question/28282134

#SPJ12

This igneous rock contains flattened pieces of pumice and small crystals of quartz and feldspar. what type of eruption probably formed this rock?

Answers

Final answer:

The igneous rock in question, characterized by the presence of flattened pumice and small quartz and feldspar crystals, was likely formed by an explosive volcanic eruption. This is evidenced by the extrusive nature of pumice and the rapid cooling inferred from the small crystal sizes.

Explanation:

The igneous rock described contains flattened pieces of pumice and small crystals of quartz and feldspar. The presence of pumice, which is a vesicular felsic igneous extrusive rock with a very low density such that it can float on water, indicates that the rock was formed during an explosive volcanic eruption. This type of eruption releases lava that cools very quickly on the surface of the Earth, trapping gases within the rock and creating the vesicles or holes that define pumice. Hence, the rock exhibits characteristics of an extrusive igneous rock.

Moreover, the small crystal sizes of quartz and feldspar suggest rapid cooling as well. Large crystals are typically indicative of slow cooling within the Earth's crust, a feature of intrusive igneous rocks like granite. Given these characteristics, it is evident that the rock formed from an explosive eruption, which would have caused the rapid cooling and trapping of gas that are evident in the presence of pumice.

When the space shuttle coasts in a circular orbit at constant speed about the earth, is it accelerating? if so, in what direction?

Answers

Yes. Acceleration means any change in speed or direction of motion. When an object coasts in a circular orbit at constant speed around the Earth, its direction is constantly changing. The acceleration is "CENTRIPETAL", which points toward the center of the circle.

Yes, there is centripetal acceleration, whose direction is radially inwards, towards the center of the Earth.

How to get the acceleration?

Remember that if an object is not accelerating, then it will remain at rest or will move with a constant velocity. Remember that velocity is defined by a magnitude (the speed) and a direction.

Now, in the case of a circular orbit, the speed is constant, but the direction of motion is not, so the velocity is not constant. So yes, we have acceleration.

That acceleration is called centripetal acceleration, and always appears when we have circular motion, is an acceleration that points inwards, to the center of the circle.

So in the case of the space shuttle that orbits Earth, the acceleration's direction would be radially inwards, towards the center of the Earth.

If you want to learn more about acceleration, you can read:

https://brainly.com/question/605631

If earth had no landmasses, then the idealized zonal precipitation pattern would have _______.

Answers

If the planet earth has no land masses, the idealized zonal precipitation pattern would likely have regions that are wet in the equator and there will be more of mid-latitudes if the earth has no land masses at all and it does not exist.

What wave phenomenon is responsible for the sunlight shown in this diagram? A.)Diffraction, because light is bent around the clouds B.)Refraction, because the light bends through the clouds C.)Absorption, because the sunlight is absorbed by the clouds D.)Transmission, because the sunlight travels through the clouds

Answers

A) DIFFRACTION, because light is bent around the clouds" is the correct answer.

A.)Diffraction, because light is bent around the clouds

43.278 kg - 28.1 g use significant figures rule

Answers

You cannot directly subtract the given values because their units are different. To be consistent, let's convert kilograms to grams with the conversion that 1,000 g = 1 kg.

43.278 kg(1,000 g/1 kg) - 28.1 g = 43249.9 grams

In subtraction, you will base the number of significant figures to the least of the given data. Since 28.1 has 3 significant figures, the answer should also contain 3 significant figures. Thus, it is much more convenient to report it in terms of kilograms.

43249.9 grams * 1 kg/ 1,000 g = 43.2 kg

Henry takes a boat ride for 15 minutes to reach his destination. If the boat was traveling at 6 meters/second, how far did the boat travel?

Answers

Do 6 * 60 * 15
The answer is 5,400
The boat traveled 5,400 meters or 5.4 km (3.355 mi)

Answer: The distance traveled by boat is 5400 meters.

Explanation:

Speed is defined as the ratio of distance traveled to the time taken.

To calculate the distance traveled by boat, we use the equation:

[tex]\text{Spped of the boat}=\frac{\text{Distance traveled}}{\text{Time taken}}[/tex]

We are given:

Speed of the boat = 6 m/s

Time taken = 15 mins = 900 s     (Conversion factor:   1 min = 60 s)

Putting values in above equation, we get:

[tex]6m/s=\frac{\text{Distance traveled by boat}}{900s}\\\\\text{Distance traveled by boat}=(6m/s\times 900s)=5400m[/tex]

Hence, the distance traveled by boat is 5400 meters.

The peripheral nervous system consists of __________ that link the central nervous system with all parts of the body.

Answers

Answer- Communication Lines

did a reaction happen in the erlenmeyer flask? how can you tell?

Answers

cause i saw it and i know it

Final answer:

To determine if a reaction happened in an Erlenmeyer flask, you can observe indicators such as color change, formation of a precipitate, and gas evolution.

Explanation:

In order to determine if a reaction happened in the Erlenmeyer flask, you can observe several indicators:

Change in color: If the original reactants and the product have different colors, it suggests that a reaction took place.Formation of a precipitate: If a solid substance appears in the solution, it indicates the formation of a new compound.Gas evolution: If bubbles or a gas is produced, it signifies that a reaction occurred.

Additionally, other observations such as the release of energy (exothermic reaction) or absorption of energy (endothermic reaction) can provide further evidence of a reaction.

What's the steady state theory

Answers

Answer:

A theory explaining the model of the Universe.

Explanation:

Steady State theory, proposed in 1948 by Sir Hermann Bondi, Thomas Gold, and Sir Fred Hoyle, suggests that the universe is always expanding while maintaining a constant average density. This is achieved as matter is continuously created to form new stars and galaxies at the same rate as that of old ones becoming non-observable. This occurs as a consequence of increasing distance and velocity of recession of old stars and galaxies.

As per this theory, Universe has no beginning and no end in time. If looked at it from a grand scale, the arrangement of galaxies and average density remain same.

Later observation of the Universe gave results contradictory to Steady State Theory. This has led to increase in support of Big Bang Model of the Universe.

The steady state theory in systems theory means state variables do not change over time, and in chemical kinetics, it refers to the steady-state approximation where an intermediate's concentration is assumed constant, aiding in the analysis of complex reactions.

The steady state theory refers to a concept in systems theory where a system or process is said to be in a steady state if its state variables, which define the behavior of the system, are not changing over time. In the context of chemical kinetics, this often pertains to the steady-state approximation, where the concentration of an intermediate in a reaction is assumed to be constant over time because its formation rate is equal to its consumption rate. This approximation simplifies the mathematical analysis of complex reactions and is particularly useful in enzyme kinetics, as proposed by Briggs & Haldane in 1925.

The steady-state assumption does not imply that the system is static or that there is an absence of reaction fluxes. Rather, it means that even though reactions are occurring and products are being formed, the internal metabolite concentrations and the fluxes (input and output fluxes) are maintained constant over time. This is a critical simplification that aids in metabolic modeling and the analysis of enzymatic reactions.

Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 3.8 m/s2 for 4.6 seconds. It then continues at a constant speed for 9.2 seconds, before applying the brakes such that the car’s speed decreases uniformly coming to rest 257.71 meters from where it started. The yellow car accelerates uniformly for the entire distance, finally catching the blue car just as the blue car comes to a stop.
How fast is the blue car going 2.8 seconds after it starts?

Answers

First, create an illustration of the motion of the two cars as shown in the attached picture. The essential equations used is

For constant acceleration:
a = v,final - v,initial /t

The solutions is as follows:

 a = v,final - v,initial /t
 3.8 = (v - 0)/2.8 s
 v = 10.64 m/s
 After 2.8 seconds, the speed of the blue car is 10.64 m/s.
Final answer:

The blue car accelerates at 3.8 m/s² from rest. After 2.8 seconds, its speed is calculated using the formula v = u + at. The car's speed at that moment is 10.64 m/s.

Explanation:

To determine how fast the blue car is going 2.8 seconds after it starts, we use the formula for final velocity in uniformly accelerated motion, which is v = u + at, where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time.

Here, the initial velocity u is 0 m/s since the car starts from rest, the acceleration a is given as 3.8 m/s2, and the time t is 2.8 seconds.

Plugging the values into the formula gives us:

v = 0 m/s + (3.8 m/s2)(2.8 s) = 10.64 m/s.

Thus, the blue car is traveling at a speed of 10.64 meters per second after 2.8 seconds from the start.

Learn more about accelerates  here:

https://brainly.com/question/37061342

#SPJ12

What is the weight in newtons of an object that has a mass of 610 mg?

Answers

To answer this question, you need to know the gravity power used for this equation. Let assume the gravity is 9.8N/kg. Then to find the mass, you need to multiply the weight with gravitational acceleration. The equation would be:

mass= weight x gravity
mass= 610mg x 10^-6 kg/mg x 9.8N/kg= 5978 x 10^-6= 5.978 x 10^-3

What potential difference is needed to accelerate a he+ ion (charge +e, mass 4u) from rest to a speed of 1.8×106 m/s ?

Answers

Final answer:

The potential difference needed to accelerate a He+ ion to a specific speed can be calculated using kinetic energy and charge, with the equation V = ½mv² / q, where m is the mass of the ion, v is the velocity, and q is the charge.

Explanation:

The student has asked what potential difference is needed to accelerate a He+ ion (charge +e, mass 4u) from rest to a speed of 1.8×106 m/s. The kinetic energy gained by the ion when it's accelerated through a potential difference (V) is equal to the charge of the ion (q) times the potential difference (V). Thus, we use the equation KE = qV and also know that KE can be expressed as ½mv2. Therefore, we can set these equations equal to solve for V:

V = ½mv2 / q

Where m is the mass of the He+ ion, v is the final velocity, and q is the charge of the ion. For He+ ion, q is +e, which is 1.602×10−19 C because it has one fewer electron than a normal helium atom. The mass of a He+ ion can be converted to kilograms by multiplying the atomic mass unit (u) with the conversion factor (1 u = 1.6605×10−27 kg), so for 4u, it would be 4×1.6605×10−27 kg.

Plugging these values into the equation, we can calculate the required potential difference to achieve the given speed.

What is the earth's average velocity for one year?

Answers

The Earth's average velocity relative to the Sun as measured during a tropical year, which is the time measured between two consecutive March equinoxes, is 2.988589 x 10^4 m/s.

state and explain guass law?

Answers

"Gauss's Law. The total of the electric flux out of a closed surface is equal to the charge enclosed divided by the permittivity. The electric flux through an area is defined as the electric field multiplied by the area of the surface projected in a plane perpendicular to the field. ,"  Source:    hyperphysics.phy-astr.gsu.edu/hbase/electric/gaulaw.html

If you would like more info please look at the website. Im only in middle school, so I am sorry if this is not what you were looking for.....

Final answer:

Gauss's Law is a fundamental principle in Physics that relates the electric flux through a closed surface to the net electric charge enclosed by the surface. It states that the electric flux is proportional to the total charge enclosed by the surface divided by the permittivity of free space.

Explanation:

Gauss's Law is a fundamental principle in Physics that relates the electric flux through a closed surface to the net electric charge enclosed by the surface. It states that the electric flux is proportional to the total charge enclosed by the surface divided by the permittivity of free space. Mathematically, it can be written as:

Σi E⟀Ai = Γenclosed / ε0

Where Σi E⟀Ai is the sum of the dot products of the electric field and the area vectors of small surface elements, Γenclosed is the net electric charge enclosed by the surface, and ε0 is the permittivity of free space.

An infant's pulse rate is measured to be 127 ± 4 beats/min. what are the uncertainty and the percent uncertainty in this measurement?

Answers

The uncertainty in the measurement is ± 4 beats/min, and the percent uncertainty is approximately 3.15%.

The reported pulse rate for an infant is 127 ± 4 beats/min. Here,  "± 4 beats/min" refers to the degree of uncertainty of the measurement.

1. Uncertainty: The uncertainty of a measurement is the range of values ​​in which the true value is expected to fall. In this example the uncertainty is ± 4 beats/min.

2.Percent Uncertainty: Uncertainty as a percentage is calculated by multiplying the ratio of the uncertainty in the measured value by 100. Uncertainty is expressed as a fraction of the measured value.

Percent Uncertainty = (Uncertainty / Measured Value) × 100

Using the given values:

Uncertainty = ± 4 beats/min

Measured Value = 127 beats/min

Percent Uncertainty = (4 / 127) × 100 ≈ 3.15%

So, the uncertainty in the measurement is ± 4 beats/min, and the percent uncertainty is approximately 3.15%.

Learn more about uncertainty, here:

https://brainly.com/question/33389550

#SPJ12

Final answer:

The uncertainty in the infant's pulse rate measurement is ± 4 beats/min. To calculate the percent uncertainty, divide the uncertainty by the measured value (127 beats/min), giving a percent uncertainty of 3.15%.

Explanation:

The uncertainty in the infant's pulse rate is given as ± 4 beats/min. The percent uncertainty can be calculated by dividing the uncertainty by the measured value and then multiplying by 100 to get the answer in percent.

To calculate the percent uncertainty:

Divide the absolute uncertainty by the measured value: 4 beats/min ÷ 127 beats/min. Multiply the result by 100 to convert it to a percentage: (4 beats/min ÷ 127 beats/min) × 100.

Performing these calculations:

(4 ÷ 127) × 100 = 3.15%

Therefore, the percent uncertainty in the measurement of the infant's pulse rate is 3.15%.

If for 1.00 inch there are 2.54 cm, then how many centimeters are in 4.00 ft

Answers

121.92 is the answer I believe

To convert 4.00 feet to centimeters, multiply 4.00 feet by 12 inches per foot to get inches, then multiply the result by 2.54 to convert inches to centimeters. The result is 121.92 centimeters.

To convert 4.00 feet to centimeters, you can use the conversion factors and the chain link method. First, you need to know the basic conversion factors, which are 2.54 cm in 1 inch and 12 inches in 1 foot. Using these conversions:

Convert feet to inches: 4.00 ft ×12 in/ft = 48.00 in

Then convert inches to centimeters: 48.00 in ×2.54 cm/in = 121.92 cm

Therefore, there are 121.92 centimeters in 4.00 feet.

A gas is cooled from 365 K to 285 K while its volume changes from 12.8 L to 9.9 L. The initial pressure of the gas is 1.9 atm.

Answers

Assuming you want the new pressure, PV/T = PV/T , so by extension you'd have (1.9 atm)(12.8 L)/ 365 K = x atm (9.9L)/ 285 K  x= 1.918 atm

What volume of .2500 m cobalt iii chloride is required to react completely with 25 ml of .0315 m calcium hydroxide?

Answers

f 0.0315 M calcium hydroxide?Co2(SO4)3 + 3Ca(OH)2---> 2Co(OH)3+ 3CaSO4 Co Sulfate and Ca hydroxide react

could you mark as brailiest

In what way do acids affect your body?

Answers

everyway, if it touch your skin it can damage it

The value of the electrical charge on particles is never a whole number true or false

Answers

The value of the electrical charge on particles is never a whole number true or false - TRUE

An airplane went from 120 m/s to 180 m/s in 4.0 seconds. What was its acceleration?

Answers

15 m/s^2 The first thing to calculate is the difference between the final and initial velocities. So 180 m/s - 120 m/s = 60 m/s So the plane changed velocity by a total of 60 m/s. Now divide that change in velocity by the amount of time taken to cause that change in velocity, giving 60 m/s / 4.0 s = 15.0 m/s^2 Since you only have 2 significaant figures, round the result to 2 significant figures giving 15 m/s^2

According to a newspaper account, a paratrooper survived a training jump from 1200 ft when his parachute failed to open but provided some air resistance by ï¬apping unopen in the wind. allegedly he hit the ground at 100 mi/h after falling 8 seconds. test the accuracy of this account.

Answers

Final answer:

Determining the plausibility of a paratrooper hitting the ground at 100 mi/h after an 8-second fall involves examining the concept of terminal velocity and the effects of air resistance on falling objects.

Explanation:

The question concerns a paratrooper's descent with a malfunctioning parachute and whether it's plausible for him to hit the ground at 100 mi/h after falling for 8 seconds. To test the accuracy of this account, we must look at the forces involved and the terminal velocity a parachutist can reach. For example, a skydiver with a mass of 75 kg can achieve a terminal velocity of about 350 km/h in a headfirst position, which corresponds to minimizing the area and therefore the drag. Transitioning to a spread-eagle position can decrease this velocity to about 200 km/h, increasing air resistance due to a larger cross-sectional area. However, after a parachute opens, the terminal velocity becomes much smaller. This means that if the parachute provided any air resistance, it's unlikely the paratrooper would be traveling at 100 mi/h (which is approximately 160 km/h) after just 8 seconds.

The paratrooper's reported fall seems plausible as the calculated average acceleration, considering air resistance, is 5.59 m/s².

A paratrooper is reported to have survived a fall from 1200 ft after his parachute failed to open. To verify this account, let's calculate the following:

1. Terminal Velocity Calculation

The paratrooper fell for 8 seconds and allegedly hit the ground at 100 mi/h.

First, convert the velocity and time:

Velocity, v = 100 mi/h = 44.7 m/s

Time, t = 8 s

2. Average Acceleration

We can use the equation of motion, v = u + at where:

u = initial velocity (0, since he started from rest)

v = final velocity (44.7 m/s)

a = acceleration

t = time (8 s)

Rearranging for acceleration, we get:

a = (v - u) / t = 44.7 m/s / 8 s = 5.59 m/s2

3. Free Fall and Air Resistance

In a vacuum, the paratrooper would fall under a gravitational acceleration of 9.8 m/s². Given our acceleration is 5.59 m/s², air resistance played a significant role, slowing his acceleration.

Conclusion

The report's accuracy seems plausible given the average acceleration calculated. However, other factors like the angle of impact and ground conditions would also have contributed to his survival.

Other Questions
How does writing 3.441 in expanded form show why the same digit can have different values? compare the values of each 3 in the number 633,248 Explain the relationship between the pancreas and homeostasis give examples are producers, primary consumers, secondary consumers, and decomposers What are some characteristics of democracy that dictatorships adopt? One day, a king left his castle with a bag of silver coins to wander his kingdom. to the first peasant he met, he gave one-half of the coins plus two more. A little later, he met another peasant to whom he also gave one-half of his coins plus two more. Walking on, he met a third peasant and again gave half his coins plus two more. FInally, the king went home with two coins left in his bag. How many coins did he have to begin with? Create an algebraic equation. Please explain why. What were the men who came to the Constitutional Convention referred to as? A mother calls you to ask about a proper dosage of cough medicine for her 2-year-old. The bottle says to administer 5.0mg/kg three times a day for children under 3 years of age. The cough syrup is supplied in a liquid that contains 50.0mg/mL. Te gusta la cafetera? (1 point)Question 7 options:1)S, me gustan la cafetera.2)No, no me gusta la cafetera.3)S, te gusta la cafetera.4)No, no me gustan la cafetera.Te gusta la clase de arte? (1 point) Question 5 options: 1) No, no me gustan la clase de arte. 2) S, me gusta la clase de arte. 3) No, no te gusta la clase de arte. 4) No, no te gustan la clase de arte.Te gusta el gimnasio? (1 point)Question 6 options:1)No, no me gustan el gimnasio.2)No, no te gusta el gimnasio.3)S, me gustan el gimnasio.4)S, me gusta el gimnasioTe gusta la biblioteca? (1 point)Question 8 options:1)S, me gustan la biblioteca.2)S, te gusta la biblioteca.3)No, no me gusta la biblioteca.4)No, no te gustan la biblioteca. The pattern, beginning in the 1950s, of texans voting for a republican president but sticking with conservative democrats for state offices is called Which type of growth can occur only when a population has unlimited resources what is the counterexample "the difference of two numbers less than the greater number" In the early 1800s, u.s. magazines began to less resemble their british forefathers, in large part because of uniquely american: How has the Supreme Courts original interpretation of the right to privacy changed because of Griswold and Roe?Give your response in the form of a short paragraph. Which branch of government is described in article ii of the u.s. constitution? judicial branch executive branch legislative branch submit? During a catered lunch, an average of 4 cups of tea are poured per minute. The lunch will last 2 hours. How many gallons of tea should the caterer bring if there are 16 cups in one gallon? Evaluate the following expression using the values given:Find 4x y 2z if x = 2, y = 3, and z = 2 15 15 7 7 true or false: objects fall toward earth at a rate of 9.8 m/s because of centripetal force. In a grocery store there are 4self-checkout lines and 8 lines with cashiers. Find the ratio of the number of lines with cashiers to the number of self-checkout lines. Express the answer as a simplified fraction. if you used 16 gallons when driving 367 miles, what was your gas mileage over that distance Steam Workshop Downloader