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P4 – The bills are what?!

(Heating and Insulating a House)

1) List three ways you can insulate a house.

2) Which is a better insulator – a material with a high or a low u-value? _______________ 3) Describe briefly how solar panels can be used to heat water for a house or workplace. _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ 4) Calculate the payback time on fitting carpets which cost £250 when they save you £75 per year. Show your working out. _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ 5) Calculate the amount of energy needed to heat 50kg of water from 20oC to 30oC. The specific heat capacity of water is 4200 J/kgoC. Show your working out. _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________

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Profile for Carl A

Physics workbook 12 13  

Physics workbook 12 13  

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