A system of pulleys is used to raise a load of bricks that weighs 1,700 newtons. The force applied to the pulley is 340 newtons. What's the mechanical advantage of this machine?

An object has a constant momentum of 2.45x10^2 kg m/s. Determine the momentum of the object if its mass decreases to 1/3 of its original value?

How important friction is?

A football is kicked with a velocity of 31 meters per second at an angle of 41 degrees what is the balls acceleration in the vertical direction as it flies through the air

Which phrase best describes wave motion? movement of energy through space or a medium movement of matter through space movement of energy within a particle movement of air molecules through a medium

Is a decrease in velocity considered an acceleration

Protons have electrical charge; electrons have. electrical charge

The mass of a newborn baby is 4.2 kilograms what is the baby's weight? (The acceleration due to gravity is 9.8 m/s2)

What holds the atoms together in a covalent bond

The sun is the centermost star of our solar system. a. True b. False

When an electron moves from a lower to a higher energy level