Explain why a balloon filled with air cannot float in the middle of a room without moving downwards but a helium balloon of the same size can?

A person must pull a rope 20 meters with a force of 200 N what is the work input?

If an atom had 35 protons in the nucleus how many electrons will it have orbiting the nucleus?

The sum of all the potential energy and kinetic energy is an object is equal to its A-thermal energy B-kinetic energy C-potential force D-force

Are household chores a good way to fit exercise into your every day routine

Why don't we see solar and lunar eclipse every month?

At what temperature did the substance in the test tube into a solid?

What occurs when the velocity of Earth is doubled? a. The orbit of Earth around the Sun becomes smaller b. The orbit of Earth does not change c. The Earth escapes the Sun d. The orbit becomes more elliptical

When is a body said to be at rest

27. Calculate the impulse when an average force of 10 N acts on a cart for 5.0 s.

A boy on a bicycle is resting at the top of a hill then he rides his bicycle down the hill describe how the boy potential and kineti energy differ at the top middle and bottom of the him