Why would adding oil to the moving parts of a machine increase its efficiency?

Determine how potential and kinetic energy changes at each position of the pendulum as the ball swings from A to E. Position A: Position B: Position C: Position D: Position E:

if if takes a sonar 8 seconds to reach the bottom of the ocean and return and we know that the speed of sound is 1500 meters per second, how far away is the bottom of the ocean?

Many stars are classified in terms of brightness, or!

Why is pangaea important?

Explain why a moving object cannot come to a stop instantaneously (in zero seconds)

Light, dry snow is called powder. Skiing on a powder day is different than skiing on a day when the snow is wet and heavy.

Light from the sun reaches the earth in 8.3 minutes. In how many minutes does the light from the sun reach venus

For a fixed amount of gas, if the absolute temperature of the gas is doubled, what happens to the pressure of the gas?

Which actions most likely cause the domains in a ferromagnetic material to align?

A ball is thrown horizontally from the top of a tower at the same instant that a stone is dropped vertically. Which object is traveling faster when it hits the level ground below if neither of them experiences any air resistance?