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Card 16
Front
What does the U-value tell us about an insulator?
Back
Card 17
Front
What is meant by the specific heat capacity of a substance?
Back
Card 18
Front
Complete this sentence: Energy can neither be ……….. nor ………….. but it can be transferred.
Back
Card 19
Front
When energy is transferred, some is often wasted. What happens to wasted energy?
Back
Card 20
Front
How do we calculate the efficiency of a device?
Back
Card 21
Front
State the energy transfers taking place in a food mixer. Which energy transfers are wasted?
Back
Card 22
Front
How do we calculate the total amount of energy transferred by an appliance in a given time
Back
Card 23
Front
How many kilowatt-hours are used by a heater with a power of 2kW running for 2 hours.
Back
Card 24
Front
What is meant by the payback time for different methods of home insulation?
Back
Card 25
Front
How do we calculate the payback time?
Back
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