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Please help me to solve this question I tried much thanks

Please help me to solve this question I tried much thanks

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Grade:11

1 Answers

Ravleen Kaur
askIITians Faculty 1452 Points
6 years ago
Hello Student,

(1) 2000 J/oC is the correct option.
30 = mC(Th-Tl)
30 = mC(50 – 20)
mC = 30/30 =1 W/oC
Energy transfer per unit time at 40oC = mC(Tf– Ti) =1 X 20 = 20 W
Energy transfer in 10 sec is, E = 20 x 10 =200 J
Capacity of liquid = E/(40-39.9) = 2000 J/oC

Regards,
IHE


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