When there is no friction, what is the only factor that affects the final speed of a roller coaster?

Asher cycles 12 miles in 16 hours. what is his speed?

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

The dominant wavelength of energy emitted by the sun is