A shopping trolley with a mass of 40kg is pushed up a 25m
inclined ramp by a force of 80N which acts in the direction of
movement. At the end of the journey, the trolley is 2.5m higher
than before it was pushed
a. Calculate the work done pushing the trolley
b. The gain in gravitational potential energy
c. Justify the apparent loss of energy during the trolley’s
journey
I need answers to a, b,c

Asmall, positively charged ball is moved close to a large, positively charged ball. which describes how the small ball likely responds when it is released? it will move toward the large ball because like charges repel. it will move toward the large ball because like charges attract. it will move away from the large ball because like charges repel. it will move away from the large ball because like charges attract.

Which law represents the thermodynamic statement of the conservation of energy of a system? a. the fourth law b. the first law c. the second law d. the third law

Atwo-stage air compressor operates at steady state, compression 10m^3/min of air from 100 kpa and 300k to 1200 kpa. an intercooler between the two stages cools the air to 300k at a constant pressure of 350 kpa. the compression processes are isentropic. a) calculate the power required to run the compressor, in kw b) compare the result to the power required for isentropic compression from the same inlet state to the same final pressure.