Answer:
w >0, ΔE < 0
Explanation:
As per the first law of thermodynamics,
ΔE = Q - W
Where,
ΔE = Change in internal energy
Q = Heat receive or heat loss
W = work done
Work done by the system is always -ve.
Work done on the system is always +ve.
It is given that work done on the system.
W = +ve or W > 0
As, there is no heat receive or heat loss
So, Q = 0
Now, as per the first law of thermodynamics.
ΔE = Q - W
Q = 0
ΔE = - W
or ΔE < 0
So, answer would be w > 0, ΔE < 0
