The amount of heat required to raise the temperature of 1 lbm of water by is known as a
A)Btu
B)calorie
C)Calorie
D)Joule

Question

The amount of heat required to raise the temperature of 1 lbm of water by  is known as a
A)Btu 
B)calorie 
C)Calorie 
D)Joule

Quizplus · Accepted Answer

The unit for measuring the amount of heat required to raise the temperature of 1 lbm of water by 1°F is British Thermal Unit (Btu). Choice B is incorrect because calorie is the amount of heat required to raise the temperature of 1 gram of water by 1°C. Choice C is incorrect because Calorie (with a capital C) is the unit used to measure energy in food, where 1 Calorie is equal to 1000 calories. Choice D is incorrect because Joule is the SI unit of energy, but Btu is still the commonly used unit for heat energy in the United States.

The Amount of Heat Required to Raise the Temperature of 1