If an engine delivers 9.5 × 106 J of work per hour and absor... | PHYSICS - THERMODYNAMIC PROCESSES | SolveeIt | Solveeit

Today, August 19

Question

If an engine delivers 9.5 × 106 J of work per hour and absorbs 6.2 × 107 J of heat per hour, the amount of heat wasted per hour is

A

6.95 × 107 J

B

5.25 × 107 J

C

8.55 × 107 J

D

9.55 × 107 J

Answer

5.25 × 107 J

Explanation

Solution

: Useful work done per hour $= 9.5 \times 10 ^ { 6 } \mathrm {~J}$

Heat absorbed per hour $= 6.2 \times 10 ^ { 7 } \mathrm {~J}$

Amount of heat wasted per hour

= Heat absorbed per hours – useful work done per hour