What power must the pump supply to the system to pump the oil from the lower reservoir to the upper reservoir at a rate of 0.20 m3/s

a and c

c is 100% but i am confused in a

i don't understand. explain it clearly

= initial pressure

= final pressure = 2

= initial volume

= final volume = /4

= initial temperature = 20 c = 20 + 273 = 293 k

= final temperature = ?

using the equation