Multiple Choice
The specific heat of water is 4.2 kJ/kg C. The heat needed to warm 8 kg of water from 20 C to 70 C is
A) 400 kJ.
B) 420 kJ.
C) 1680 kJ.
D) 2016 kJ.
Correct Answer:

Verified
Correct Answer:
Verified
Related Questions
Q38: Heat transfer in a vacuum<br>A) can take
Q39: The specific heat of water is
Q40: The physics of a heat engine cannot
Q41: A temperature of 20 <span class="ql-formula"
Q42: The temperature of a gas sample in
Q44: In an isolated system, entropy<br>A) cannot decrease.<br>B)
Q45: The pressure on 100 liters of helium
Q46: Which of the following formulas expresses the
Q47: In order to operate, a heat engine
Q48: When a liquid freezes to become a