If time travel to the future existed, doesn't that mean that the future has already occurred and that we are living in the past? and the present is in the "future"?

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

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?

This is the number of complete movements of a wave per second.