Flashcards
Physics - Jan 2013
Cards in this deck (6)
- 1U-valueHow effective a material is as an insulator
- 2Why is a cavity brick wall with a plastic foam insulator better than a cavity brick wall with no insulation?Because the plastic foam traps the air which prevents it (the air) to form a convection current.
- 3What is glass not good at as a material?It is not a good insulator.
- 4How does the number of cooling fins affect the rate of energy transfer from the radiator?The bigger the surface area that the fins create, the bigger the energy transfer.
- 5What information can scientists find out about galaxy when they measure the size of the red-shift that it produces?They an measure its distance from the Earth and the speed that the Galaxy is moving in.
- 6What is meant by RELIABLE WAY OF GENERATING?It means that the energy is constant.
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- Flashcards on Physics - Jan 2013, created by Marina A on 07/04/2015.
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- Marina A
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