How much work is required to move3.0 coulombs of electric charge a distance of
0.010 meter through a potential difference of
9.0 volts?
(1) 2.7 × 10^3 J (3) 3.0 J
(2) 27 J (4) 3.0 × 10^−2 J

Answers

Answer 1

Answer: So we want to know how much work is needed to move a charge Q=3C for a distance r=0.01m trough a potencial difference U=9V. Work of electric potential is defined as W=Q*U and we can now simply put in the numbers. We get: W=3C*9V=27J. So the correct answer is (2) 27J.

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Answers

Answer:

number 2!

Explanation:

Answer:

2s to 4s

Explanation:

Since the graph measures acceleration over time, when the line does not move up or down is when you can see a constant velocity.

One way in which researchers have attempted to restore vision is through implanting corneal cells in a person’s eye.

Answers

The correct answer for the question that is being presented above is this one: "FALSE." One way in which researchers have attempted to restore vision is not through implanting corneal cells in a person’s eye but rather through retinal implant which is known as the retinal prosthesis.

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

Answers

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.

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c. remains the same
b. decrease
d. depends on the shape

Answers

Beginning when the bottom of the object first touches the water,
and as it descends and more and more of it goes under, the
buoyant force on it increases during that time.

As soon as the object is completely underwater, it doesn't matter
how deep under it is, the buoyant force on it remains the same.

As an object sinks in a fluid, the buoyant force decrease.

Hope this helped.

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Answers

When a soap film is viewed in white light and the film is much thinner than the wavelength of the blue light, the film will seem to be totally transparent. The thin film will reflect no visible light. It actually depends on the thickness of the film through which the light is being transmitted. I hope the answer helps you.

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