2. A copper rod (a = 1.70 x 105 °C') is 20 cm longer than an aluminum rod (a = 2.20 x 106 °C1). How long should the copper rod be if the difference in their lengths is to be independent of temperature?
2. A copper rod (a = 1.70 x 105 °C') is 20 cm longer than an aluminum rod (a = 2.20 x 106 °C1). How long should the copper rod be if the difference in their lengths is to be independent of temperature?
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Transcribed Image Text:2. A copper rod (a = 1.70 x 10% °C1 ) is 20 cm longer than an aluminum rod (a = 2.20
x 106 °C). How long should the copper rod be if the difference in their lengths is
to be independent of temperature?
3. A steel circular rod with a radius of 15 cm is placed between two vertical supports
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