An ideal heat pump does 400 J of work to keep the temperature in a dorm room at 20◦ C by dumping 3000 J of heat into the room. (a) How much heat must the heat pump remove from the outside air to maintain this temperature inside the room? (b) What is the temperature of the air outside?

An ideal heat pump does 400 J of work to keep the temperature in a dorm room at 20◦ C by dumping 3000 J of heat into the room. (a) How much heat must the heat pump remove from the outside air to maintain this temperature inside the room? (b) What is the temperature of the air outside?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter17: Energy In Thermal Processes: The First Law Of Thermodynamics

Section: Chapter Questions

Problem 31P: An ideal gas initially at 300 K undergoes an isobaric expansion at 2.50 kPa. If the volume increases...

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Question

An ideal heat pump does 400 J of work to keep the temperature in a dorm room at 20◦ C by dumping 3000 J of heat into the room.

(a) How much heat must the heat pump remove from the outside air to maintain this temperature inside the room?

(b) What is the temperature of the air outside?

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