Question 6. B) and c)

Question 6. B) And C)

Answers

Answer 1
The formula for both is v(t) = v0 + a*t

b) v(8) = 0 + 6m/s^2 *8s = 48 m/s

now we know the beginning (2) and end speed (14), but not the time:

c) 14 = 2 + 1.5*t => t = (14-2)/1.5 = 8 seconds

Related Questions

A physician has a patient that he believes has had foul play. What type of autopsy would the physician request?

Question 15 options:

Medical- legal autopsy


Investigation Autopsy


Medical Autopsy


Evidence Autopsy

Answers

Medical- legal autopsy would help determine the cause of death and confirm or reject the doctors suspicions. This is also more broadly defined as a forensic autopsy as well. This type covers death by suspicion, death without a doctor present, and also death while in surgery.
Final answer:

If a physician believes that foul play may have been involved in a patient's death, they would typically request a medical-legal autopsy.

Explanation:

If a physician believes that foul play may have been involved in a patient's death, they would typically request a medical-legal autopsy. This type of autopsy is performed to investigate the cause and manner of death, with a focus on documenting any forensic evidence that could be relevant to a legal investigation. Medical-legal autopsies differ from regular medical autopsies because they involve more detailed examination and documentation to determine if any crimes were committed.

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Which of the following is the best definition of energy?

A) The ability to produce fusion.

B) the ability to do work

C) the ability to generate heat

D) the ability to generate electricity


Is it B?

Answers

Yeah I would think B) is the best answer

If you're going 80 mph how long does it take to 80 miles

Answers

It would take you an hour, but only if you keep your speed.

Filling in the blanks
A) moments are measured of the --------- effect of a force.
B) the moment is increased if the size of the force -----------
C) the moment is also increased if the force acts at a ----------- distance
D) moments are calculated using:
Moment= ------------- multiplied by -----------
E) moments are measured in -------------

Answers

a) turning
b)greater 
c) greater
d) force*distance
e)Nm

Rank them from fastest to slowest in how quickly each warms up: (a) steel, 450 j/kgââc ; (b) aluminum, 910 j/kgââc ; (c) copper, 390 j/kgââc .

Answers

The rate of conductivity is different among different substances, like aluminum, steel, and copper. Aluminum conducts heat the fastest at 910 j/kgaac. Steel is next and conducts heat at 450 j/kgaac. Copper conducts heat the slowest at 390 j/kgaac.

A conversion factor is a ratio with a value of

A: one

B: two

C: five

D: ten

Answers

The answer would be
B

Answer:

A) one

Explanation:

for anyone else who looks for this question, the answer is one. stated in the book itself, "a conversion factor is a ratio that has a value of one."

George's highest target heart rate is 170. Yesterday on the stair stepper machine, his heart rate went to 172. What should he do the next time he uses this machine to get the most effective workout?

Answers

take a break and catch his breath.
Your answer would be that he needs to use the settings of the machine to decrease the intensity. That way he's at exactly 170 or slightly below it.

What makes the north star, polaris, special?

Answers

It's the only star in the sky (visible from the northern hemisphere) that never seems to move. It stays at almost exactly the same point in the sky, while the other stars all circle around it once a day.

What is the density of lead (in g/cm3) if a rectangular bar measuring 0.50 cm in height, 1.55 cm in width, and 25.00 cm in length has a mass of 218.9 g ? express your answer using two significant figures?

Answers

if you look at the units of density, g/cm^3 you will see it's grams divided by volume (cm^3).

218.9 g / (0.5*1.55*25 cm^3) = 11.3 g/cm^3

Answer:

Explanation:

density is defined as the measure of the mass of a matter per unit volume. it describes the sopace occupied by a substance relative to its volume.

Density = mass ÷ volume

ρ = m ÷ v

Volume = length × width × height

Volume of lead bar = l ×  w × h

V = 25 × 1.55 × 0.5

V = 19.375cm³

mass of bar = 218.9g

ρ = 218.9 ÷ 19.375

ρ = 11.2980g/cm³

ρ = 11g/cm³

A baseball weighs 5.19 oz. what is the kinetic energy, in joules, of this baseball when it is thrown by a major-league pitcher at 96.0 mi/h? by what factor will the kinetic energy change if the speed of the baseball is decreased to 55 mi/h

Answers

kinetic energy =0.5*mas*velocity^2
Joules =lg*m^2/s^2
1 miles= 1608.34 meters
1 hour= 3600 Sec
1 ounce =28.35g =0.02836 kg
What is a the kinetic energy, in joules, of this baseball when it is thrown by a major-league pitcher at 96.0 mi/h?

Answer: KE=0.5m*v^2
=0.5*(5.12 o *0.02835 kg/1 ounce)* (95 miles/h*1609.34m/1 miles* 1hr/3600s^)2
131kg*m^2/s^2= 131 joules

By what factor with the kinetic energy change if the speed of the baseball is decreased to 55.0 mi/h?

Answer: KE=0.5*m*v^2
=0.5*(5.13 o*0.02835kg/1 ounce)*(55 miles/ h*1609.34m/1 mile*1 hr/3600s)^2
=44.0kg*m^2s^2=44.0 joules

131/44= 2.98, so decreased by a factor of approximately 3



Answer:

Part a)

[tex]KE = 135.3 J[/tex]

Part b)

Factor by which KE is changed is f = 0.33

Explanation:

As we know that kinetic energy of the ball is given as

[tex]KE = \frac{1}{2} mv^2[/tex]

in order to find kinetic energy in Joule unit we need to plug in all data in SI units

so here we have

[tex]m = 5.19 oz = 0.147 kg[/tex]

now the speed of the ball is

[tex]v = 96.0 mi/h[/tex]

[tex]v = 96.0 \times \frac{1609 m}{3600 s} = 42.9 m/s[/tex]

so we will have

[tex]KE = \frac{1}{2}(0.147)(42.9)^2[/tex]

[tex]KE = 135.3 J[/tex]

Now if the speed of the ball is 55 mph

so it is

[tex]v = 55 \times \frac{1609}{3600}[/tex]

[tex]v = 24.6 m/s[/tex]

so new kinetic energy is given as

[tex]KE_2 = \frac{1}{2}(0.147)(24.6)^2[/tex]

[tex]KE_2 = 44.4 J[/tex]

So the factor by which KE is changed is given as

[tex]f = \frac{44.4}{135.3}[/tex]

[tex]f = 0.33[/tex]

a gas exerts less pressure when it has a a. smaller volume b. lower temperature c. higher temperature d. two of the above

Answers

The combined gas law is 
[tex] \frac{Pressure_{1} *Volume_{1}}{Temperature_{1}} = \frac{Pressure_{2} *Volume_{2}}{Temperature_{2}} [/tex] with 1 and 2 both being anything with pressure, volume, and temperature. Since pressure is on the top and temperature is on the bottom, they are inversely related, meaning that when the temperature gets high the pressure goes low. In addition, since pressure and volume are both on the top, when volume goes down pressure goes down too. Therefore, since A and C are right, D is the correct answer

What are the activities involved in scientific method?

Answers

 Ask a Question Do Background Research Construct a Hypothesis Test Your Hypothesis by Doing an Experiment Analyze Your Dat…a and Draw a Conclusion Communicate Your Results
.
Final answer:

The scientific method is a structured approach that scientists use to answer questions and solve problems, involving steps such as making observations, asking questions, researching, formulating hypotheses, and conducting experiments.

Explanation:

In the pursuit of understanding the natural world, scientists engage in a sequence of activities known as the scientific method. This method is foundational to experimenting, observing, and learning in science. The scientific method often includes the following steps:

Making initial observations to identify a phenomenon of interest.Asking a question that seeks to explain the observation.Conducting research to gather existing knowledge on the topic.Formulating a testable hypothesis as a potential answer.Executing experiments to test the validity of the hypothesis.

These steps enable a structured approach to inquiry, ensuring that conclusions are well-supported by empirical evidence. Notably, the scientific method is flexible and can vary to accommodate different scientific disciplines and types of inquiries.

How do mass and speed affect kinetic energy?

Answers

The mass affects the kinetic energy because the more the mass the more energy is given to the object and the speed affects by making it go faster and longer, so whenever speed goes up so does energy.
Here is your answer:

Kinetic energy is when an object or person is moving.

Ex: A car going down the street.

Mass effects kinetic energy because mass is weight and weight will make an object go slower which lowers the kinetic energy and rises the potential energy (that's when a object is at rest or not moving)

A plane is flying east at 135 m/s. The wind accelerates it at 2.18 m/s squared directly north east. After 18.0s, what is the displacement (magnitude and direction) of the plane?

Answers

2.18/18.0 should be your answer

Approximately 4271.9 m is the magnitude of the displacement, and its direction is approximately [tex]\( 56.14^\circ \)[/tex] north of east.

To find the displacement of the plane, we need to consider both the initial velocity of the plane and the acceleration due to the wind. Let's break down the problem into horizontal (east) and vertical (north) components:

1. Horizontal Motion (East):

  - Initial velocity [tex](\(v_{\text{initial}}\))[/tex] = 135 m/s (east)

  - Time (t) = 18.0 s

  - There is no acceleration in the east direction.

2. Vertical Motion (North):

  - Initial velocity [tex](\(v_{\text{initial}}\))[/tex] = 0 m/s (since the wind accelerates the plane only horizontally)

  - Acceleration (a) = 2.18 m/s² (north)

  - Time (t) = 18.0 s

Horizontal Motion (East):

For the horizontal motion, since there is no acceleration, the displacement [tex](\(d_{\text{east}}\))[/tex] is simply:

[tex]\[ d_{\text{east}} = v_{\text{initial}} \times t \][/tex]

[tex]\[ d_{\text{east}} = 135 \, \text{m/s} \times 18.0 \, \text{s} \][/tex]

[tex]\[ d_{\text{east}} = 2430 \, \text{m} \][/tex]

Vertical Motion (North):

For the vertical motion, we can use the equation of motion:

[tex]\[ d_{\text{north}} = v_{\text{initial}} \times t + \frac{1}{2} a t^2 \][/tex]

[tex]\[ d_{\text{north}} = 0 \times 18.0 \, \text{s} + \frac{1}{2} (2.18 \, \text{m/s}^2) \times (18.0 \, \text{s})^2 \][/tex]

[tex]\[ d_{\text{north}} = 0 + \frac{1}{2} \times 2.18 \times 18^2 \][/tex]

[tex]\[ d_{\text{north}} = \frac{1}{2} \times 2.18 \times 324 \][/tex]

[tex]\[ d_{\text{north}} = 3513.6 \, \text{m} \][/tex]

Resultant Displacement:

To find the resultant displacement, we'll use the Pythagorean theorem since the displacement vectors form a right triangle:

[tex]\[ \text{Resultant Displacement} = \sqrt{(d_{\text{east}})^2 + (d_{\text{north}})^2} \][/tex]

[tex]\[ \text{Resultant Displacement} = \sqrt{(2430 \, \text{m})^2 + (3513.6 \, \text{m})^2} \][/tex]

[tex]\[ \text{Resultant Displacement} \approx \sqrt{5904900 \, \text{m}^2 + 12346627.36 \, \text{m}^2} \][/tex]

[tex]\[ \text{Resultant Displacement} \approx \sqrt{18251527.36 \, \text{m}^2} \][/tex]

[tex]\[ \text{Resultant Displacement} \approx 4271.9 \, \text{m} \][/tex]

Direction:

To find the direction, we'll use trigonometry:

[tex]\[ \text{Direction} = \arctan \left( \frac{d_{\text{north}}}{d_{\text{east}}} \right) \][/tex]

[tex]\[ \text{Direction} = \arctan \left( \frac{3513.6 \, \text{m}}{2430 \, \text{m}} \right) \][/tex]

[tex]\[ \text{Direction} = \arctan \left( 1.445 \right) \][/tex]

[tex]\[ \text{Direction} \approx 56.14^\circ \][/tex]

The magnitude of the displacement of the plane is approximately 4271.9 m, and its direction is approximately [tex]\( 56.14^\circ \)[/tex] north of east.

A vehicle's kinetic energy can be overcome by:

Answers

A massive amount of force acting on it. Thus making the car stop.
The amount of force making the car stop

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Investigators studied the effect of temperature on the rate of biological enzyme action. The experimental data is summarized in the graph. The investigators concluded that the enzyme works best at human body temperature.

What part of the data validates their conclusion?

The graph peaks at 37°C and dips beyond this point.
B) The graph shows an exponential rise in reaction velocity.
C) The graph shows that the reaction is complete at 60°C.
D) The reaction is seen for temperatures between 0°C and 60°C.

Answers

A. the graph peaks at 37 C and dips beyond this point hope this helps

Answer:

The graph peaks at 37°C and dips beyond this point.

Explanation:

Imagine that temperature is on the x axis and rate of biological enzyme action is on y axis. Now as the temperature changes it is seen that the rate of biological enzyme action increases and is maximum at body temperature which is 37°C. Increasing the temperature does not change the rate of biological enzyme action. Which means there is no peak beyond 37°C.

It is not very difficult to accelerate an electron to a speed that is 99.5% of the speed of light, because it has such a very small mass. what is the ratio of the kinetic energy k to the rest energy mc2 in this case? in the definition of what we mean by kinetic energy (k = e - mc2), you must use the full relativistic formula for e, because v/c is not small compared to 1.

Answers

Final answer:

The kinetic energy (K) to rest energy (mc2) ratio for an electron traveling at 99.5% of the speed of light is approximately 150%. This is determined using the full relativistic formula, as classical mechanics significantly underestimates the required energy.

Explanation:

When an electron is accelerated to a speed that is 99.5% of the speed of light, relativistic effects become significant. The rest mass energy of an electron is 0.511 MeV, and at this high velocity, the kinetic energy is no longer accurately described by classical physics, and the full relativistic energy formula must be utilized. The relativistic kinetic energy of the electron is significantly greater than the classical value. If the classical kinetic energy is denoted as KEclass and the relativistic kinetic energy is denoted as KErel, the ratio KErel/KEclass is approximately 12.4. This highlights the substantial energy needed to accelerate a mass close to the speed of light, much more than classical physics would predict.

The ratio of the kinetic energy (K) to the rest energy (mc2) can be calculated using the relativistic energy equation E2 = (pc)2 + (mc2)2, where E is the total energy and p is the momentum. For an electron at 99.5% of the speed of light, this ratio is approximately 150%, meaning the kinetic energy is about one and a half times the rest mass energy. Therefore, for an electron moving at such high velocities, enormously high energies are required as indicated by currents accelerators like SLAC.

How has access to the source code of proprietary software?

Answers

Proprietary software is the software that is owned by an individual or the company that developed it.
Source code is the basic component of a computer program and it is the only component where a programmer can read and modify a computer program.
The source code for proprietary software is closed. Only the programmers who have made the software have access to the source code.

Answer:

Explanation:

It's a software publisher

For the chemical reaction H2 + CO2 → H2O + CO, the energy contained in the reactants is 394 kJ, and the energy contained in the products is 352 kJ, assuming 1 mol of each substance is present. Which of the following statements is true?

Answers

where's the following statements?

C. 42 kJ is absorbed, and the reaction is endothermic. Because the amount of energy in the products is less than that of the reactants, the reaction is endothermic. Endothermic reactions use up, or absorb energy.

What's the difference between inplicit and explicit solvent?

Answers

hi 

Explicit- and implicit-solvent molecular dynamics simulations are performed to study complexation in two polyelectrolyte systems: poly(styrene sulfonate)/poly(allylamine hydrochloride) (PSS/PAH) and poly(acrylic acid)/poly(allylamine hydrochloride) (PAA/PAH). Both these systems have been used in layer-by-layer assembly of polyelectrolyte films, with the first of these typically yielding linear growth in film thickness with increasing numbers of layers and the second yielding exponential growth. In both the systems, the polyelectrolytes have the same number of monomers and are present in stoichiometric proportion, and water is used as solvent. Simulations give important insights into the structure and composition of the complexes. We found that the PSS/PAH complex is more compact and has a smaller fraction of water than the PAA/PAH complex due to the presence of phenyl rings in the PSS chain and the hydrophilic nature of the charged group in the PAA chain. Either an increase in salt concentration or a decrease in partial charge fraction increases swelling and the water content in the complex. To overcome the computational limitations associated with the explicit-solvent simulation, a simple strategy to develop the force field for an implicit-solvent simulation is proposed. In the absence of salt and for fully charged polyelectrolytes, the radius-of-gyration and the various radial distribution functions predicted by the implicit-solvent simulation match well with those predicted by the explicit-solvent simulation, while reasonable agreement is obtained in the other cases. The implicit-solvent simulation was performed for bigger system sizes, and we observed trends similar to those observed for smaller system sizes, suggesting that the simulation results are independent of system size.

hope it helps..

In large urban areas people know how to establish private zones of solitude even in crowds. Urban golffman analyse this as an instance of socialization called

Answers

This is an instance of socialization called Gesellschaft. This occurs within a large, urban society in which social bonds are based on impersonal and specialized relationships, with little long-term commitment to the group or consensus on values
The answer is Gesellschaft. It is the making of rational will and is characterized by contemporary, cosmopolitan civilizations with their administration bureaucracies and big industrialized organizations. In the Gesellschaft, normal self-interest and scheming conduct act to deteriorate the old-fashioned bonds of family, relationship, and religion that infuse the Gemeinschaft’s structure. 

The National Ambient Air Quality Standards (NAAQS) are maximum allowable levels for _____ harmful pollutants. sixteen six sixty ten

Answers

6

I hope this helps (:

Answer;

-Six

The National Ambient Air Quality Standards (NAAQS) are maximum allowable levels for six harmful pollutants. sixteen six sixty ten.

Explanation;

-The Clean Air Act requires EPA to set National Ambient Air Quality Standards (NAAQS)  for six common air pollutants (also known as "criteria air pollutants.  These pollutants are found all over the U.S. They can harm your health and the environment, and cause property damage.

-These pollutants are particulate matter, photochemical oxidants, carbon monoxide, sulfur oxides, nitrogen oxides and lead. They are called criteria air pollutants because its sets NAAQS for them based on the criteria, which are characterizations of the latest scientific information regarding their effects on health or welfare.

What is the maximum altitude of Denman Orchard?

Answers

Essentially, denman is an island.  11,000 feet is the maximum altitude of Denman Orchard.

What is orchard?

An orchard is indeed a planned planting of shrubs or trees that is kept up for the purpose of producing food. Trees that produce fruit or nuts are often cultivated in orchards for commercial purposes.

Large gardens may include orchards as a feature, where they serve both a decorative and functional function. Although it is situated on a smaller, non-commercial scale or may emphasis berry bushes rather than fruit trees, a fruit garden and an orchard are typically interchangeable terms. Essentially, Denman is an island. 11,000 feet is the maximum altitude of Denman Orchard.

Therefore, 11,000 feet is the maximum altitude of Denman Orchard.

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Denman Orchard reaches an altitude of about 200 yards in a fictional context, while the tallest real tree in Canada mentioned is 314 feet tall.

The maximum altitude of the fictional location known as Denman Orchard, described in a fantastical passage, is approximately 200 yards above the level plateau mentioned. This is part of an imaginative narrative and not a real-world geographical feature.

In contrast, a real-world example is provided by Randy's search for a tall tree on Vancouver Island. The tree's reported height is 314 feet, which, if accurate, would make it the tallest tree in Canada.

How do rocks along the central valley of the mid oceanic ridges provide evidence of seafloor spreading?

Answers

These rocks allow you to know the ages of the rocks. If the rocks are farther from the ridge, they are considered old. The rocks near the ridges are considered the young rocks. Aside from the rock ages, it also helps determine the Earth's magnetic field. Scientists can determine this one with the help of the iron substances in the sea floor. It also helps determine the movements of active volcanoes and heat flow of the lave with the use of MOR

It is science time! You and your classmates have been challenged to identify six minerals. You begin with a dull, white sample that is easily scratched with a fingernail. What is the mineral?

Answers

The mineral is probably TALC.
Talc is white in colour, it has a dull luster and is very soft, which means that it can be scratched by finger nail. Another mineral which has properties that is almost the same with that of talc is calcite. It is also white in colour and is easily scratched by finger nail, but in its own case, the luster is dull and glassy.

A block of metal has a width of 3.2 cm, a length of 17.1 cm, and height of 3.8 cm . its mass is 1.3 kg . calculate the density of the metal.express your answer to two significant figures and include the appropriate units.

Answers

density(rho) = m/v
(1.3)/((3.2)(17.1)(3.8))
since density is given in kg/m^3 you should convert the blocks dimensions to meters

1.3/(0.032*0.038*0.171)

plugging in these numbers would give you the density

1.3/0.000208
6250
with sigfigs= 6300kg/m^3

If an object weighs 40 n on earth what would it weigh on the moon

Answers

it would weigh 1/6 (weight on the earth )
= 1/6×40 = 6.67N

What prevents geologists from exploring earth's interior?

Answers

Maybe the Earth's core.
As it has high energy......

What is speed and what is velocity?

Answers

Speed is how fast and object moves and velocity is a variable that tells you both speed and direction

Hello!

Explanation:

↓↓↓↓↓↓↓↓↓↓↓

Speed is the distance traveled during a specific unit of time. Two measurements are needed to determine speed. Average speed includes the total distance and total time. Instantaneous speed includes the distance and time at a specific moment.

DistanceTime

Velocity is the displacement of an object during a specific unit of time. Two measurements are needed to determine velocity. Displacement includes a direction, so velocity also includes a direction. Velocity can be an average velocity or an instantaneous velocity.

DisplacementTimeSpeed with direction

Hope this helps!

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-Charlie

A net force f is required to give an object with mass m an acceleration
a. if a net force 6f is applied to an object with mass 2m. what is the acceleration in this object

Answers

net force = mass × acceleration
F= ma
a = F/M
a = 6f/2m
a= {3f/m} ms-²

Answer:

net force = mass × acceleration

F= ma

a = F/M

a = 6f/2m

a= {3f/m} ms-²

Explanation:

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