A piece of aluminum has a volume of 2.26 x 10^-3 m^3. The coefficient of volume

Question

A piece of aluminum has a volume of 2.26 x 10^-3 m^3. The coefficient of volume expansion for aluminum is B= 69 x 10^-6(C degrees)^-1. The temperature of this object is raised from 29.8 to 425 degrees Celsius. How much work is done by the expanding aluminum if the air pressure is 1.01 x 10^5 Pa? A piece of aluminum has a volume of 2.26 x 10^-3 m^3. The coefficient of volume expansion for aluminum is B= 69 x 10^-6(C degrees)^-1. The temperature of this object is raised from 29.8 to 425 degrees Celsius. How much work is done by the expanding aluminum if the air pressure is 1.01 x 10^5 Pa?

Explanation / Answer

given

volume=2.26*10^-3m^3

B= 69 x 10^-6(C degrees)^-1

The temperature of this object is raised from 29.8 to 425 degrees Celsius.

air pressure is 1.01 x 10^5 Pa

increase in volume = x temperature increase.

=69 x 10^-6*(454.8)

=.0318m^3

work done = air pressure x increase in volume

=1.01 x 10^5 Pa*(0.03364)

=3397.76 j

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