Physics Mock Flashcards

Beth Stone
Flashcards by , created about 4 years ago

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Beth Stone
Created by Beth Stone about 4 years ago
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Question Answer
True or false All objects emit Infrared Radiation P1 - 1.1 True
What does Emit mean? P1 - 1.1 Emit means 'Give out'
What does absorb mean? P1 - 1.1 Absorb means 'Take in'
What is the equation for Efficiency? P1 - 1.2 Efficiency = Useful energy out ---------------------- Total energy in Or Efficiency = Useful power out ---------------------- Total power in
What is the equation for payback time? P1 - 1.2 Payback time = Cost of new appliance --------------------------- Cost of energy saved each year