An 8 000-kg aluminum flagpole 100-m high is heated by the sun from a temperature of 10C to 20C. Find the increase in internal energy (in J) of the aluminum. (The coefficient of linear expansion is 24 10-6 (C)-1, the density is 2.7 103 kg/m3, and the specific heat of aluminum is 0.215 cal/gC.)
a. 7.2 105
b. 7.2 107
c. 7.2 103
d. 7.2 101
e. 7.2 102
Question 2
An 8 000-kg aluminum flagpole 100-m long is heated by the sun from a temperature of 10C to 20C. Find the heat transferred (in J) to the aluminum if the specific heat of aluminum is 0.215 cal/gC.
a. 7.2 105
b. 7.2 107
c. 7.2 103
d. 7.2 101
e. 7.2 102
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