Which statement about nuclear fusion is correcta) two hydrogen electrons become protons during fusion b) helium nuclei xan fuse to form electrons such as nitrogen c) the fusion reaction can lastbfor several of years d) large nuclei break apart to form smaller nuclei

Assume this car is driven off a cliff . how many arrows of force need to be drawn in the free body diagram? assume no air resistance -five -one -three -four

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

In the circuit, the switch s has been open for a long time and r = 125 kohm. it is then suddenly closed. (a) determine the time constant before the switch is closed. s (b) determine the time constant after the switch is closed. _ s (c) let the switch be closed at t = 0. find the current in the switch as a function of time. (use t for time. express your answer in milliamps and seconds.) i(t) =_