Answer:
Hey
It would have to be C because no net energy is lost.
Power = work/time
Work = force * distance
(2000 N * 200 m) / 10 s = 40,000 Joules
Answer:
=170kcal
Explanation:
We first calculate the amount of energy required to melt the alcohol using the formula: MLf, where Lf is the latent heat of fussion
We then calculate amount of heat required to raise the temperature of liquid alcohol to -14° C using MC∅. We then add the two.
Thus ΔH=MLf+MC∅
ΔH=2kg×25kcal/kg+ 2kg×(0.6kcal/kg.K×(-14-⁻114)
=50kcal+120kcal
=170kcal
The first one is revolves
Answer:
i dont know the answer for this question sorry for the misunderstanding
Explanation:
