If it takes 20 seconds to lift a bag of rocks weighing 2,000 N up 10 meters, how much power was exerted? A. 40 W
B. 200 W
C. 1,000 W
D. 2,000 W

Is it possible to use the energy from two atoms colliding to create a clean burning lasting fuel source with a large amount of force? is it also possible to harness that energy from the two atoms colliding to create a clean energy source that will last for years from just two atoms colliding. is there a possibility to control and store that energy for years but slowly let the energy out enough to power cities cheaper and faster.

You are given a vector a = 125i and an unknown vector b that is perpendicular to a. the cross-product of these two vectors is a × b = 98k. what is the y-component of vector b?

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above