Which of the following sequences correctly lists the different in earthquake waves magnitude from strongest to weakest (left to right)?
- Surface waves ... P waves S waves
- S waves ... P waves Surface waves
- P waves ... S waves Surface waves
- P waves ... Surface waves ... S waves

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