You test a machine and find that it exerts a force of 5 N for each 2 N of force you exert operating the machine. What is the actual mechanical advantage of the machine?

A ball is dropped from rest from the top of a cliff that is 15.0 m high. From ground level, a second ball is thrown straight upward at the same instant that the first ball is dropped.

if the wind is pushing a boat to the east and the boats motor is pushing the boat to the north, which direction will the boat move

What is the average acceleration of the particle between 0 seconds and 4 seconds?

How do find the volume of a prizm

21. What is the formula for displacement?

An object has a mass of 8.00 kg. What is the gravitational force on the object by the earth?

Which of the following best characterizes the free energy change ΔG for an endothermic reaction under physiological conditions? A. The sign of ΔG is positive B. The sign of ΔG is zero C. The sign of ΔG is negative D.

In a recent hockey game, one player (m=100kg) was moving at a velocity of 8 m/s when he ran into another player (m=300kg) who was at rest (v=0m/s). After the collision, the two players were stuck together (moving with the same velocity).

In a laser, electrical energy is changed to light energy, and a small amount of the energy is wasted as heat. Describe the total amount of the heat in the system (using the conservation of energy).

What is the name for a star and planets held together by gravity? A. solar system B. galaxy C. black hole D. supernova