An apple drops from a tree and hits the ground in 1.5s what is its speed just before it hits the ground?

Separate the barriers so they have a 2cm gap between them.

Answer:

Separate the barriers so they have a 2cm gap between them.

Explanation:

Changing the spacing between the barriers will alter the diffraction pattern.

Answer: The correct answer is an option (C).

Explanation:

Hotspot : These are the volcanic regions which are fed by the mantle layer of an earth.  Due to high temperature and low pressure in mantle of an earth leads to the melting of the rocks and this molten form of rock is known as magma. This magma rises through cracks and erupts out from volcanoes.

Accretion : A process of addition of a material to a tectonic plate or a landmass.

Fault : It is a crack in an earth crust.They linked with or form , the boundaries present between the earth's tectonic plates.

Mid-Ocean ridge: An elevated region on an ocean floor or we can say underwater mountain range formed on the ocean floor by the movement of tectonic plates.

Answer:

C

Explanation:

I am smart

Answer:

The magnitude of the force on the horse by the cart is 60 N.

Explanation:

Given that,

mass of cart = 100 kg

Acceleration of cart = 0.50 m/s²

Horse exerted force on a cart F= 60 N

The cart is moving by the force is defined as:

[tex]F' = ma[/tex]

[tex]F' = 100\times0.50[/tex]

[tex]F' = 50\ N[/tex]

The cart is moving by the 50 N force.

But according to newton's third law,

Newton's third law is action reaction law.

When we exerted the force on the object then the object exerted same force but opposite direction.

Therefore,

A horse exerted the force on the cart and the cart exerted equal but opposite force on horse.

F=-F''

F = -60 N

So, The magnitude of the force is 60 N

Hence, The magnitude of the force on the horse by the cart is 60 N.

the correct answer is C. physical

Answer:

c physical

Explanation:

Physical properties are used to compare the two liquids. Both water and rubbing alcohol have the same clear color while their boiling points, odor, and densities are all different.

Consider the east-west direction along x-axis and north-south direction along y-axis. In unit vector notation, velocities can be given as

[tex]\underset{V_{A}}{\rightarrow}[/tex] = velocity of car A before collision = 0 i - [tex]V_{A}[/tex] j

[tex]\underset{V_{B}}{\rightarrow}[/tex] = velocity of car B before collision = [tex]V_{B}[/tex] i + 0 j

[tex]\underset{V_{AB}}{\rightarrow}[/tex] = velocity of combination after collision = (35.8 Cos31.6) i - (35.8 Sin31.6) j = 30.5 i - 18.8 j

[tex]M_{A}[/tex] = mass of car A = 1750 kg

[tex]M_{B}[/tex] = mass of car B = 1450 kg

Using conservation of momentum

[tex]M_{A}[/tex]  [tex]\underset{V_{A}}{\rightarrow}[/tex] + [tex]M_{B}[/tex]  [tex]\underset{V_{B}}{\rightarrow}[/tex] = ([tex]M_{A}[/tex] + [tex]M_{B}[/tex]) ( [tex]\underset{V_{AB}}{\rightarrow}[/tex] )

(1750) (0 i - [tex]V_{A}[/tex] j) + (1450) ([tex]V_{B}[/tex] i + 0 j) = (1750 + 1450) (30.5 i - 18.8 j)

(1450) [tex]V_{B}[/tex] i - (1750) [tex]V_{A}[/tex] j = 97600 i - 60160 j

Comparing the coefficient of "i" and "j" both side

(1450) [tex]V_{B}[/tex] = 97600    and - (1750) [tex]V_{A}[/tex] = - 60160

[tex]V_{B}[/tex] = 67.3 km/h        and  [tex]V_{A}[/tex] = 34.4 km/

mv'=(M+m)v

v'=d/t

v=x/t

m'=M/2

Md/2t=(M+M/2)x/t

Md/2=3Mx/2

d=3x=>x=d/3=6/3=2 m

The boat and the person moving in opposite directions is a result of the principle of conservation of momentum. The man's mass being half of the boat means the boat will compensate for his movement to conserve the total momentum, shifting in the opposite direction. However, the exact distance can't be determined without more details due to factors like water resistance.

In this case, we're dealing with a Physics problem. The topic is principle of conservation of momentum, which refers to the total momentum of an isolated system remaining constant if no external forces act on it.

As the total momentum of the system (boat and person) remains constant, the boat and the person move in such a way that their total momentum is preserved. The man's mass being half of the boat indicates that when the man moves to one end, the boat will shift by a certain distance in the opposite direction to conserve momentum.

However, as the resistance of water is neglected, we cannot calculate the exact distance the boat moves without more data. In real life, there are many factors like water resistance and the distributed mass of the boat that need to be accounted.

https://brainly.com/question/32309314

#SPJ2

The ball's mechanical energy transforms from kinetic to gravitational potential as it is thrown up and slows down, and from gravitational potential back to kinetic as it falls down, increasing in speed.

When a ball is thrown straight up, it undergoes a series of energy transformations involving mechanical energy. Initially, the ball has kinetic energy as it moves upwards. As it rises, this kinetic energy is gradually converted into gravitational potential energy due to the influence of Earth's gravity. The kinetic energy decreases because the ball slows down, and at the peak of its trajectory, its velocity is zero, so all of the kinetic energy has been converted into gravitational potential energy.

As the ball starts to fall back down, the gravitational potential energy begins to convert back into kinetic energy. The ball accelerates due to gravity, increasing its speed as it descends. By the time the ball reaches the hand of the thrower or the ground, nearly all of the gravitational potential energy has been transformed back into kinetic energy (assuming no energy is lost due to air resistance or other non-conservative forces). The ball's speed upon impact will be roughly the same as the speed it had when it was initially released, again depending on air resistance and other factors.

260 Newtons equals 26.51 Kg, or 58.44 lbs.

Hope this helps!

Answer:

The Answer is B) Office of Human Services Emergency Preparedness and Response

17.6 m/s hope this helps

The average speed of a cheetah that runs 88 meters in 5 seconds is 17.6 meters per second.

The average speed can be defined as the total distance traveled by the object in a particular time interval. The average speed is a scalar quantity because it is represented by only the magnitude and does not have the direction. The SI unit for average speed is m/s or ms⁻¹.

The formula for determining average speed is:

Average speed = Distance covered by the object/ Total time taken

Average speed = 88m / 5sec

Average speed = 17.6 m/s

Therefore, the average speed of the cheetah is 17.6 meters per second.

Learn more about Average speed here:

https://brainly.com/question/12322912

#SPJ6

Answer:

Middle East, North America,  Russia and the Former Soviet Union, South America, Africa

Explanation:

1. Middle East: The Middle East is one of the most significant regions for oil production, with countries like Saudi Arabia, Iraq, Iran, Kuwait, and the United Arab Emirates being major oil producers.

2. North America: Within North America, the United States and Canada have large concentrations of oil wells, particularly in states like Texas, Oklahoma, Alaska, and provinces like Alberta.

3. Russia and the Former Soviet Union: Russia is a major oil-producing country, and during the time of the Soviet Union, several other countries in the region also contributed significantly to oil production.

4. South America: Countries like Venezuela and Brazil have significant oil reserves and production.

5. Africa: Countries like Nigeria, Angola, and Algeria have substantial oil production.

Step 1: Look in your book or online for the conical pendulum equation.

Step 2: Look at the drawing and see which angle is involved in the equation.

Answer: It's Angle #2 in your drawing.

The angle θ in a conical pendulum often represents the angle between the vertical line (pendulum string at rest) and the slanted line (pendulum string in motion). It is crucial in calculating aspects of the pendulum's motion using the conical pendulum equation.

In the context of a conical pendulum, the angle θ typically represents the angle between the vertical line (the length of the pendulum string when at rest) and the slanted line (the length of the pendulum when it is in motion). Without a specific diagram to reference, it's difficult to state with certainty which number (1, 2, 3, or 4) would represent θ. However, commonly in diagrams of conical pendulums, θ is represented by the angle between the vertical dashed line and the string of the pendulum when it is being pulled sideways, creating a conical shape. In trigonometry, this angle θ is important when calculating various aspects of the pendulum's motion using the conical pendulum equation. This angle is typically small, hence, allowing for the small angle approximation sin θ ≈ θ can be used in small-angle cases.

https://brainly.com/question/35905603

#SPJ12

Given that

force ( F) = 100 lb ,

displacement (S) = 100 m ,

Determine , Work = ?

                     Work = Force × displacement

                           W = 100 ×  100

                           W = 100000 lb-m

looks like its projectiles = swimmer. see encls may help

Answer:

The running horizontal speed should be larger than 1.29 m/s.

Explanation:

In order for the swimmer to just miss the bone-breaking ledge, her horizontal speed must be

[tex]v > \frac{1.75m}{t_{fall}}[/tex]

in which we need to know how long we she be diving through the air. To determine that, recall the formula for the distance made by an object with acceleration (in this case it is the gravitational acceleration) with no initial (vertical) velocity:

[tex]s = \frac{1}{2}gt^2[/tex]

from which it follows that (for non-negative t)

[tex]t = \sqrt{\frac{2\cdot9m}{9.8\fram{m}{s^2}}}\approx1.36s[/tex]

This result can be used in the initial inequality:

[tex]v > \frac{1.75m}{t_{fall}}=\frac{1.75m}{1.36s}=1.29\frac{m}{s}[/tex]

The diving lady better gets a speed larger than 1.29 m/s to avoid landing on the ledge.

These are also called zones of equatorial calm and it is due a climatic phenomenon that is placed near the Earth equator, attributed to the soft winds, that are called calm winds as well; accompanied by systems of abundant rains and heat.

In this area periods of great calm occur when the winds virtually disappear completely, trapping the sailing ships for long periods (days or weeks). This is why the term doldrum became popular as a colloquial expression in the eighteenth century, to refer to "the caprice of the wind that slows down the navigation to sail".

The zone is located in the place where two trade winds meet, this means the trade winds of the northern hemisphere converge with those of the southern hemisphere, that is why this region is related to the intertropical convergence zone.

Final answer:

The race car moves a distance of 363 meters during the given time period.

Explanation:

To calculate the distance the race car moves during the given time, we can use the formula:

distance = initial velocity * time + 0.5 * acceleration * time^2

Given that the initial velocity of the car is 44 m/s and it slows down to a velocity of 22 m/s over 11 s with a constant acceleration, we can substitute these values into the formula:

distance = 44 * 11 + 0.5 * acceleration * 11^2

To find the acceleration, we can use the formula:

acceleration = (final velocity - initial velocity) / time

Substituting the values, the acceleration is:

acceleration = (22 - 44) / 11 = -2 m/s^2

Now we can substitute the acceleration value into the distance formula:

distance = 44 * 11 + 0.5 * (-2) * 11^2

Simplifying the equation, we get:

distance = 484 - 121

distance = 363 meters

The force of friction between the dragster's tires and the track is 2352 newtons, calculated using the formula F=μN with the given mass of 300kg and the coefficient of friction 0.8.

The force of friction between the dragster's tires and the track can be calculated using the formula F=μN, where F is the frictional force, μ is the coefficient of friction, and N is the normal force. In this case, the normal force is equal to the weight of the dragster, which is the mass (m) times the acceleration due to gravity (g), N = mg. Given that the mass (m) is 300kg and the coefficient of friction (μ) is 0.8, the force of friction can be calculated as:

F = μ × mg = 0.8 × 300kg × 9.8m/s² = 2352N

Therefore, the force of friction is 2352 newtons (N).

Answer:

[tex]1000 \Omega[/tex]

Explanation:

The relationship between voltage, resistance and current in a circuit is given by Ohm's law:

[tex]V=RI[/tex]

where

V is the voltage

R is the resistance

I is the current

In this problem, we have:

V = 10 V

R = ?

I = 10 mA = 0.010 A

Therefore, we can re-arrange the equation to find R:

[tex]R=\frac{V}{I}=\frac{10 V}{0.010 A}=1000\Omega[/tex]

When two forces act in the same direction they add together. Equal forces acting in opposite directions are called balanced forces. Balanced acing on a object wont change the objects motion. When you add equal forces in opposite directions the net force is going to be zero.

Windmill technology can generate power using a renewable source of energy that does not pollute the environment. By generating a surplus of energy, individuals can sell it to the power company which can replace the energy generated by burning fossil fuels.

The third alternative.

Answer:

Option (3)

Explanation:

Windmills are usually considered to be a structure that is commonly used in the region where there is a high amount of wind supply and converts the wind energy into electrical energy.

Wind is a renewable resource as it can be regenerated, and it does not emit any kind of harmful gases that can pollute the environment.

As these windmills produce electricity, it is being used by the farmers in the given region, and the excess amount of energy is sold to the various power companies by the individuals. This electrical energy so produced directly replaces the fossil fuels, that emits a significant amount of carbon and affects the environment.

Thus, the correct answer is option (3).

Answer:

5.77 × 10^2 s

Explanation:

Power is defined as the amount of work done divided by the tima taken to do that work:

[tex]P=\frac{W}{t}[/tex]

where W is the work done and t the time taken.

In this problem, we have:

- the power: [tex]P=1.51 \cdot 10^4 W[/tex]

- the work done: [tex]W=8.72 \cdot 10^6 J[/tex]

So we can re-arrange the previous equation to find the time taken:

[tex]t=\frac{W}{P}=\frac{8.72 \cdot 10^6 J}{1.51 \cdot 10^4 W}=5.77\cdot 10^2 s[/tex]

Answer:

B) 5.77 × 10^2 s

Explanation:

Answer:

confirmation bias

Explanation:

the tendency to interpret new evidence as confirmation of one's existing beliefs or theories in a way that affirms one's prior beliefs or hypotheses.

Final answer:

Cognitive bias involves arriving at solutions based on preconceptions and ignoring conflicting evidence.

Explanation:

Problem-Solving Obstacles: Cognitive Bias

The obstacle to problem solving that you're referring to is commonly known as cognitive bias. Cognitive bias is a mental error that occurs when individuals hold onto their preconceptions, even when presented with new information that challenges those beliefs. This bias makes it difficult for individuals to process information in an unbiased manner, leading to deficits in problem-solving and decision-making.

Confirmation bias is a specific type of cognitive bias that involves seeking or interpreting evidence in ways that are partial to existing beliefs, expectations, or a hypothesis in hand. It represents a tendency to favor information that confirms one's preconceptions or hypotheses regardless of whether the information is true.

As a result, people afflicted with confirmation bias may disregard or undervalue evidence that contradicts their existing views, leading to a form of intellectual blinders.

Another related concept is the need for closure, which describes an individual's desire for a firm answer to a question, leading them to seek conclusions that feel satisfying rather than necessarily accurate. Both confirmation bias and the need for closure can lead to biased problem-solving, where a person's desire to reach a particular conclusion can cause them to overlook or ignore relevant information that does not align with their existing beliefs.

Answer: decibel

It is the unit of sound abbreviated as dB. It is also defined as Power per square meter, Therefore intensity of sound expressed in Watt per square meter (W/m2).

Decibel (dB)is the unit of expressing the ratio between two physical quantities, usually amounts of acoustics or electric power or measuring the relative loudness of sounds.

If your using GradPoint or NovaNet,

your answer would be (B) decibel.

I hope this helped!

Answer:

Because most of the human body (about 70% of it) consists of water

Explanation:

The main reason why the specific heat capacity of the human body is very close to that of water is that water makes approximately 70% of the substances of which the human body consists. However, the human body has a slightly smaller specific heat capacity than water, because it contains also other elements/substances, and since water is one of the substances with the higher specific heat capacity at all, the specific heat capacity of the body is a bit smaller.

Water has a specific heat capacity close to, but somewhat less than, that of the human body. The high specific heat capacity of water is due to the hydrogen bonding between water molecules.

Water has a specific heat capacity that is close to, but somewhat less than, that of the human body. The specific heat capacity of a substance is the amount of heat required to raise the temperature of one gram of that substance by one degree Celsius. Water's specific heat capacity is about 4,184 J/kg/°C, while the specific heat capacity of the human body is approximately 3,500 J/kg/°C.

The high specific heat capacity of water is due to the hydrogen bonding between water molecules. These hydrogen bonds require a significant amount of energy to break, resulting in water's ability to absorb and retain heat. This property is beneficial for warm-blooded animals, like humans, as it helps regulate body temperature and prevents rapid temperature changes.

Let's see if I remember this...

a) You are determining the amount of normal (upward) force that must be applied in order to counter the gravitational force of the helicopter. You may use the Fnet equation in order to solve this (note how Fnet = 0 as the helicopter is not accelerating if it is staying still in the air).

    Fnet = Fg + F(up)

         0 = Fg + F(up)

         0 = mg + F(up)

         0 = 1500 kg(9.8 N/kg [down]) + F(up)

  -F(up) = 1500 kg(9.8 N/kg [down])

  -F(up) = 14700 [down]

   F(up) = 14700 N [up]

Therefore, the amount of upward force required to keep the helicopter at a constant height is 15000 N [up]. (Using significant digit rules).

b) You are determining the acceleration of the net force to figure out the maximum upward acceleration of the helicopter. You may use the Fnet equation in order to solve this.

        Fnet = Fg + F(up)

          ma = mg + F(up)

1500kg(a) = 1500kg(9.8 N/kg [down]) + 20000N [up]

1500kg(a) = 14700 N [down] + 20000N [up]

1500kg(a) = 14700 N [down] - 20000N [down]

1500kg(a) = -5300 N [down]

1500kg(a) = 5300 N [up]

              a = 0.28301 m/s² [up]

Therefore, the maximum upwards acceleration of the helicopter would be 0.3 m/s² [up]. I am not too sure if I have done significant digit rules correctly for this question, but I hope I helped!

It allows it to blend in with the environment and avoid predators.

Answer: A-they change the direction of the forces

Explanation:

Any device which makes our work simpler is known as a machine. A machine may increase the amount of output force which is determined by its mechanical advantage or a machine changes the direction of the force.

In the given situation the input force acts in the downward direction to pull the rope. The output force acts on the flag being pulled upwards at the other end. Thus, the direction of the forces varies. Correct option is A.

Answer:

A-they change the direction of the forces

Explanation:

Electrical power is defined as

P = I * V

I = 3 amperes

V = 240 volts

Power = 3 * 240

Power = 720 Watts. Answer