A grasshopper leaps into the air at a 62° angle above the horizontal, and follows a parabolic arc in free fall after it leaves the ground. Mark all of the following that are true at the top of that parabolic arc?
a. The grasshopper is in equilibrium at the top of the arc.
b. The grasshopper's total velocity vector is zero.
c. The grasshopper's acceleration vector is zero.
d. None of the above.
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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
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A grasshopper leaps into the air at a 62° angle above the horizontal, and follows a parabolic arc in...
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