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100g of water is heated from 30°C to 50°C.

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asked Mar 28, 2018 in Physics by paayal (26,720 points) ● 4 ● 6 ● 11

100g of water is heated from 30°C to 50°C. Ignoring the slight expansion of the water, the change in its internal energy is (specific heat of water is 4184Jkg–1K–1)

(a) 4.2kJ

(b) 8.4kJ

(c) 84kJ 

(d) 2.1kJ

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answered Mar 28, 2018 by sanjaydas (61,430 points) ● 5 ● 7 ● 7
selected Mar 28, 2018 by Vikash Kumar
 
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