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.

Time remainin52: 42the chart shows data for a moving object. which conclusion is best supported by the information inthe chart? time (s)velocity (m/s

4r-134a enters the condenser of a residential heat pump at 800 kpa and 50°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3°c. the refrigerant enters the compressor at 200 kpa superheated by 4°c determine (a) the isentropic efficiency of the compressor, (b) the rate of heat supplied to the heated room, and (c) the cop of the heat pump. also, determine (d) the cop and rate of heat supplied to the heated room if this heat pump operated on the ideal vapor-compression cycle between the pressure limits of 200 and 800 kpa. (0.757, 4.37 kw, 5.12, 6.18, 3.91 kw)

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