A 1500 W electrical heater is used to heat 20 kg of water (cp = 4186 J/kgK) in an insulated bucket, from a temperature of 30 C to 80 C. If the heater temperature is only infinitesimally larger than the water temperature during the process, the change in entropy for the heater is _________ J/K and for water J/K.

A 1500 W electrical heater is used to heat 20 kg of water (cp = 4186 J

1.	A 1500 W electrical heater is used to heat 20 kg of water (cp = 4186 J/kgK) in an insulated bucket, from a temperature of 30 C to 80 C. If the heater temperature is only infinitesimally larger than the water temperature during the process, the change in entropy for the heater is _________ J/K and for water J/K.
A.	12786.99 J/kg
B.	22786.99 J/kg
C.	1200.99 J/kg
D.	12786.99 J/kg
Answer» E.

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