Johanna is studying what happens to the energy as a ball rolls down a ramp. What is one form of energy that she is studying? gravitational potential energy
electrical energy
chemical energy
elastic potential energy

In which of the following cases is work being done on an object? question 2 options: pulling a trailer up a hill carrying a box down a corridor suspending a heavy weight with a strong chain pushing against a locked door

Amagnetic field applies forces on: a)static chargesb)moving chargesc)water flow

Abeam of electrons moves at right angles to a magnetic field of 4.5 × 10-2 tesla. if the electrons have a velocity of 6.5 × 106 meters/second, what is the force acting on the electrons? the value of q = -1.6 × 10-19 coulombs.