5.14

5.14

28 October 2011

11:10
· 5.14 describe the Kelvin scale of temperature and be able to convert between the Kelvin and Celsius scales

Converting Centigrade to Kelvin
TK = ToC + 273

Converting Kelvin to Centigrade
ToC = TK - 273

TK = Temperature in Kelvin [K]

ToC = Temperature in Degrees Centigrade [oC]

5.14 Questions

02 November 2011

18:29
· Collins p.118

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ANSWERS

1. Kinetic Theory says that the higher the temperature, the more energy the particles in that system will have. Therefore, in order for something to have an 'absolute zero' temperature, it must similarly have absolutely zero energy. -273 Celsius is regarded to be this temperature (or 0 Kelvin), though it has not been ever found in the universe.

2. (a) Celsius -> Kelvin
i) 20'C + 273 = 293K
ii) 150'C + 273 = 423K
iii) 1000'C +273 = 1273K

(b) Kelvin -> Celsius
i) 300K - 273 = 27'C
ii) 650 - 273 = 377'C
iii) 1000 - 273 = 727'C