PHYSICS HIGH SCHOOL

A warm-up routine prepares the entire body for vigorous exercise but especially the ...

Answers

Answer 1
Answer:

Answer:

muscles!!

Explanation:
Answer 2
Answer:

Yeah what that other guy said

Related Questions

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An automatic response to a stimulus is called a reflex.

Describe two reasons why an alpha particle is less penetrating than a beta or gamma particle.

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Alpha particles travel through the air they collide with oxygen and nitrogen molecules. While they collide with these molecules, they lose some energy until all energy are used up and they are absorbed. These particles can be absorbed by a sheet of paper or by the air. On the other hand, beta particles and gamma particles move faster than the alpha particles and are poor at ionizing atoms or molecules thus it takes more of the material to be able to absorb these particles.

Answer:

1. Heavy mass

2. greater charge

Explanation:

An alpha particle has two protons and two neutrons. It has +2 e charge. It is a heavy mass particle. Thus, when it tends to penetrate even a thin sheet, it loses its energy very quickly because of its interaction with the material particles.

Beta particle is a high energy electron or positron. It carries 1 unit charge and has very less mass in comparison to an alpha particle. Thus, it has more penetrating power than alpha particle.

A gamma particle is charge less and mass less highly energetic particle. Thus, it has highest penetrating power.

When celery is placed in a glass of pure water the solution inside its cells is _____ compared to the water.?

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The correct answer to the question above is hypertonic. When celery is being placed in a glass of pure water, the solution inside its cells is going to appear as hypertonic compared to the water. This means that the cells inside has a higher concentration than outside.

A blender uses 1,500 joules of energy in 5 seconds. What is the power rating of the blender?

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 the answer is 300 watts

Answer:

The power rating of the blender is 300 W.

Explanation:

To find the power of an object, you need to divided the work by the time. Thus, we would divide the work, 1,500, by the time, 5 seconds. This gives you the answer, 300 W.

The Hoover dam is a hydroelectric power plant that converts the energy of falling water into electricity. Which of the following determines the amount of potential energy of the water stored in the reservoir of the dam? Choose all that apply.A.the electric potential energy of the water. B. the weight of the water C.the height of the water D. The temperature of the water (I think it's A and C but I'm not sure)

Answers

The correct answer to the question is : B) The weight of the water, and C) The height of the water.

EXPLANATION :

Before coming into any conclusion, first we have to understand potential energy of a body.

The potential energy of a body due to its position from ground is known as gravitational potential energy.

The gravitational potential energy is calculated as -

                      Potential energy P.E = mgh

 Here, m is the mass of the body, and g is the acceleration due to gravity.

h stands for the height of the body from the ground.

We know that weight of a body is equal to the product of mass with acceleration due to gravity.

Hence, weight W = mg

Hence, potential energy is written as P.E = weight × height.

Hence, potential energy depends on the weight and height of the water.
Answer would be: B & C
Potential energy = weight * height

Hope this helps!

Coal _____. is a renewable resource can easily be replenished is formed from plant remains is the least-polluting energy source

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Coal . . . . .

-- is a renewable resource that can easily be replenished.
   It happens by itself, and you don't even need to do anything,
   but it takes several million years.

-- Is formed from plant remains, and

-- is perhaps the MOST polluting energy source.

There is only supposed to be one answer choice, so the correct answer is is formed from plant remains.

Heisenberg's Uncertainty Principle states that we cannot simultaneously measure both the position and momentum of an object better than a certain accuracy. This limitation is not a consequence of imperfect technology, but is a fundamental law. It applies to all objects -- photons, electrons, baseballs, etc.. A highly monochromatic, continuous beam of laser light of wavelength 470 nm passes through an electro-optic shutter. The shutter opens and closes in a time interval of Δt = 90 ps . After passing through the shutter to what uncertainty, Δx, have the photons been localized?

Answers

For this specific problem, the photons have been localized toDx = 0.027muncertainty. I am hoping that this answer has satisfied yourquery about and it will be able to help you, and if you’d like, feel free toask another question.
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