Physics problem (Related heat chapter)?

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Physics problem (Related heat chapter)?

Q.1 A steel tape is calibrated at 300 Kelvin. On a cold day temperature is -25 degree centigrade what will be the percent error change?
(Alpha of steel = 11*10^-6 per degree kelvin)

2007-08-31 00:50:17 · 2 answers · asked by Yahya B 1 in Science & Mathematics ➔ Physics

2 answers

You have a 300 - (273-25) = 52 K temperature change. Error is 52 * 1.1E-7 = 5.72E-6 = 0.000572%.

2007-08-31 01:50:41 · answer #1 · answered by kirchwey 7 · 1⤊ 0⤋

-25C = 248K

im guessing the equation will be:

11*10^-6*248 = 27.3*10^-3

27.3*10^-3/300 * 100 = 9.09*10^-4%

2007-08-31 01:03:42 · answer #2 · answered by SS4 7 · 0⤊ 0⤋