Simone created a chart to summarize the energy transformations that take place when energy from the wind is used to generate electricity. which best completes the chart?
a) nuclear energy transformed to electrical energy
b) chemical energy transformed to electrical energy
c) radiant energy transformed to mechanical energy
d) kinetic energy transformed to mechanical energy

The great sandini is a 60.0-kg circus performer who is shot from a cannon (actually a spring gun). you don’t find many men of his caliber, so you him design a new gun. this new gun has a very large spring with a very small mass and a force constant of 1100 n/m that he will compress with a force of 4400 n. the inside of the gun barrel is coated with teflon, so the average friction force will be only 40.0 n during the 4.00 m he moves in the barrel. at what speed will he emerge from the end of the barrel, 2.50 m above his initial rest position?