Aboy on a skateboard is pushed down the sidewalk by a friend. the skateboard rolls for a while but eventually comes to a stop. what force is causing the skateboard to stop rolling?

Which atomic model was proposed as a result of j. j. thomson’s work?

In a heat engine if 1000 j of heat enters the system and the piston does 500j of work, what is the final internal energy of the system if the inital energy was 2000 j1.write the equation2.list out your known variables 3. plug the numbers into the equations4.solve 5.write your solution statement that includes initial energy and final energy added.

Four friends, a, b, c, and d are standing varying distances away from a speaker which is producing sound waves.