What causes electricity? A the nucleus of an atom
B moving neutrons
C Moving protons
D moving electrons

Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?

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 what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)