A pulley is used to lift a heavy mass from the floor to the platform. The IMA of the system is 5 and the AMA is 2.5. What is the efficiency of the system?

What is the acceleration of a 3 kg rock that is thrown with a force of 18 N?

Ronald wants to see if a new shower cleaner works better in removing soap than his old cleaner. He uses the new cleaner on one half of the shower tiles and his old cleaner on the other half.

What is the speed of a wave yhat has a frequency of 2.0Hz

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. It consists of a solenoid (wire) wrapped around a bar of iron or other ferromagnetic material.

How do simple machines make work easier? A. They add energy to the work. B. They increase the force needed to work. C. They reduce the speed of work. D. They increase the distance over which a force is applied.

If you put in 10 J of work to push 1 c of charge against and electric field what will be its voltage with respect to its starting position? when released, what will be it's kinetic energy if it flies past it's starting position?

The process of changing the energy of a system by means of force. Force * Diatance

A gnat takes off from one end of a pencil and flies around erratically for 18.6 seconds before landing on the other end of the same pencil. If the gnat flew a total distance of 7.15 meters, and the pencil is 6.

An apple falls from an apple tree growing on a 20° slope. the apple hits the ground with an impact velocity of 16.5 m/s straight downward. what is the component of the apple's impact velocity parallel to the surface of the slope?

Objects falling through the air experience a type of friction called air resistance. true or false