A roller coaster is climbing a hill. What occurs just as the coaster breaches the top of the hill and begins to go down?

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

Does current flow through or across a resistor?