Why does a gymnast rub powder on his hands before exercising on a set of parallel bars? (I need a scientific answer)

To calculate how much rest energy an object contains, you multiply a. its mass times its velocity. b. the force on it times the length of time the force acts. c. its mass times its acceleration. d. its mass times the speed of light squared. e. one

What place or system in which goods are traded illegally

What voltage would be measured across the 15 ohm resistor with a 10V battery?

A 20 kg rock is a 5 meters above ground. how much energy is stored gravitationally?

A wave is moving at the rate of 40 cm/s. Its wavelength is 8 cm. What is the frequency of the wave?

If you hit a wall, will the force that you exert on the wall be greater than, or less than, or equal to the force that the wall exerts on you. Explain your answer.

Which waves can u see

How does the weight of a rocket affect the height and distance?

A disturbance that moves through space and time is called a ___.

Angela sees a puzzle that uses a board with 20 holes drilled into it. There are 18 pegs in the holes, and the goal of the puzzle is to move the pegs by hopping them into the open holes until both holes are at one end of the board.