Aman is pushing a heavy crate up an inclined plane (ramp) into the back of semi trailer. what can the man do to make it easier to get the crate up the ramp?

a) use gloves.
b) make the ramp longer.
c) make the ramp shorter.
d) pull it instead of push it.

According to social exchange theory, altruistic behaviors benefit the individual who performs them. t/f

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat

Abatter hits a 0.140-kg baseball that was approaching him at 30 m/s and, as a result, the ball leaves the bat at 40 m/s in the reverse of its original direction. the ball remains in contact with the bat for 2.0 ms. what is the magnitude of the average force exerted by the bat on the ball?