The gas used to fill party ballons contain only helium atoms. This make helium a (n).

Two small plastic spheres between them has magnitude 0.22 N. What is the charge on each sphere is one the other? Explain whether it can be determined from the information give, whether the charges are positive or negative.

Distinguish mass and weight

1) A current carrying loop of width a and length b is placed near a current carrying wire. How does the net force on the loop compare to the net force on a single wire segment of length a carrying the same amount of current placed at the same

When bases are in solution with water, they are known as: a. Acids c. Sols b. Alkalis d. Ionic bases

What parts make up an atom

Which safety measures should you follow during a thunderstorm? Check all that apply. (A) Avoid touching anything that conducts electricity. (B) Avoid touching a person who has been struck by lightning. (C) Go outside.

1. An automobile with a mass of 1000 kg accelerates when the traffic light turns green. If the net force on the car is 4000 N, what is the car's acceleration?

Imagine that you replace the block in the video with a happy or sad ball identical to the one used as a pendulum, so that the sad ball strikes a sad ball and the happy ball strikes a happy ball.

Under what conditions will an object experience a gravitational force? Under what conditions will an object experience an electric force? Under what conditions will an object experience a magnetic force?

A basketball player pushes down with a force of 34 N on a basketball that is inflated to a gauge pressure of 9 x 104 Pa. What is the diameter of contact between the ball! and the floor?