Andy has two strong magnetic marbles of equal size. what will happen when he puts the two marbles about 2 centimeters apart? a) they will roll towards each other and stick together. b) they will roll away from each other and push apart. c) one will attract the other one. d) the two marbles will not move.

Amira pulls a 3 pound wagon 4 feet. how much work has she done?

An engine undergoes a cycle as shown in the diagram. during a complete cycle the work done by the gas is 28.5×103 j and the energy transferred thermally out is 99.4×103 j. there are 1.5×1024 gas molecules and they have three active degrees of freedom. 6. (6 pts) during which process(es) is energy transferred thermally into the gas? a. 1→2 b. 2→3 c. 4→1 d. 1→2 and 4→1 e. none of the above

Explain why you think this diagram shows what happened to the carbon in the biodome.