Date post: | 20-Aug-2015 |
Category: |
Business |
Upload: | david-ridings |
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U values measure how effective a material is as an insulator
It is defined as the rate of heat flow in
watts (W) through
an area of 1 square metre (m) for a
temperature difference across the
structure
of 1 C degree centigrade You don’t need this
definition!
The specific heat capacity of a substance is the amount of energy
required to change the temperature of one kilogram of the
substance by one degree Celsius
Experiment to find out the SHC of a substance
• The metal I’m testing is ___________. • Mass of metal _____________• Initial temperature =• Final temperature after 8 minutes =• Change in temperature = • Time in seconds = • Current = • Voltage =• Power = current × voltage • Energy transferred to the metal in 8 minutes = power
× time (seconds) Challenge: What is the SHC of the metal?