What are some ways to increase gravitational potential energy? (Choose all that apply)
Decrease mass
Increase mass
Increase height
Stretch the object
push the object into motion
Increase velocity
decrease velocity

The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s

Which transition by an electron will release the greatest amount of energy? oa ob oc od

J. j. thomson’s experiment disproved the theory that an atom