Physics, asked by shalomsachin2830, 9 months ago

A refrigerator works between 0ºC and 27ºC. Heat is to be
removed from the refrigerated space at the rate of 50 kcal/
minute, the power of the motor of the refrigerator is
(a) 0.346 kW (b) 3.46 kW
(c) 34.6 kW (d) 346 kW

Answers

Answered by rsingh625
0

T

1

−T

2

T

2

=

W

Q

2

300−273

273

=

W

50,000

W=

273

27×50,000

cal/min

p=

t

W

=

60×273

4.2×27×50,000

J/s

=346 watt=0.346 kW

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