A test charge is introduced into the electric field of a charge. It feels a force of 2F where the electric field is 2E. What would the force on the test charge be where the electric field is 8E?

Somebody explain how you would get the answer.

What is the term for the force exerted on an object by another object

When changes build up on a surface they: A. apply a force to charges wandering nearby. B. create an electric field. C. a and b D. a or b

a rock thrown horizontally at 20m/s from the top of a building 63m high. How far from the base of the building does the rock land?

Roger sees water balloons fall past his window. He notices that each balloon strikes the sidewalk 1.2s after passing his window. Roger's room is on the fifth floor, 25m above the sidewalk.

A cylinder has a length of 3.23 cm, a diameter of 1.75 cm, and a mass of 69.61 grams. (a) What is the density of the cylinder? (b) Based on its density, of what kind of material might it be made?

You have just installed a new sound card in your system, and Windows says the card installed with no errors. When you plug up the speakers and try to play a music CD, you hear no sound. What is the first thing you should do? The second thing? a.

Why does convection occur only in fluids?

The force of repulsion between two like-charged particles will increase if

An automobile tire having a temperature of -2.6°C (a cold tire on a cold day) is filled to a gauge pressure of 24 lb/in^2 What would be the gauge pressure in the tire when its temperature rises to 43◦C?

Compared to that of a plane on the ground, Earth's gravitational pull on a plane 7 miles above Earth is approximately A) zero. B) the same. C) half as much. D) twice as much.