Water’s specific heat equal to 4190 J/kg·K, how much work one needs to do to increase...

Question

Question

Water’s specific heat equal to 4190 J/kg·K, how much work one needs to do to increase the temperature of 0.5 kg of water by 1oC?

A. 0 J

B. 2,095 J

C. 4,190 J

D. 574,344 J

Answer 1

Answer #1

here,

the specific heat of water , C = 4190 J/kgK

mass of water , m = 0.5 kg

change in temperature , dT = 1 degree C

the work done required , W = m * C * dT

W = 0.5 * 4190 * 1 J

W = 2095 J

the work done required is B) 2095 J

Answer 2

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