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Author Question: The air inside a bicycle tire pump has 60 joules of work done on it as 20 joules of heat is ... (Read 160 times)

sabina

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on: Jul 28, 2018
The air inside a bicycle tire pump has 60 joules of work done on it as 20 joules of heat is conducted away from it. What is the change in internal energy of the air?

Question 2

The Eiffel tower in Paris is 300 meters tall on a cold day (T =  5 degrees Celsius). What is its height on a hot day when the temperature is 35 degrees? (It is made of iron which has a coefficient of linear expansion of 0.000012 per degree Celsius.)


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vseab

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Reply #1 on: Jul 28, 2018
Answer to Question 1

40 J

Answer to Question 2

300.144 m


sabina

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Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

ricroger

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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