The Specific Heat of Water Is 4 $\degree$ C How Long Will It Take for a 2-KW Heating

question 39

Multiple Choice

The specific heat of water is 4.2 kJ/kg $\degree$ C. How long will it take for a 2-kW heating element to raise the temperature of 30 kg of water from 20 $\degree$ C to 80 $\degree$ C?

• A) 6.3 min
• B) 15 min
• C) 63 min
• D) 84 min

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