Homework Help: Physics

Posted by Janaih on Sunday, April 27, 2008 at 12:56pm.

Compressed air can be pumped underground into huge caverns as a form of energy storage. The volume of a cavern is 5.60 105 m3, and the pressure of the air in it is 8.40 106 Pa. Assume that air is a diatomic ideal gas whose internal energy U is given by U = 5/2 nRT. If one home uses 14.0 kWh of energy per day, how many homes could this internal energy serve for one day?

Physics - bobpursley, Sunday, April 27, 2008 at 1:59pm
Well, PV=nRT, so U= 5/2PV.

That will be in Joules. To convert to kWh (kJ3600sec), divide by 1000, then divide by 3600. That will be the energy in kWh of stored energy.

Answer this Question

Related Questions

physics - Compressed air can be pumped underground into huge caverns as a form ...
Physics - A bicycle tire whose volume is 4.1 x 10-4 m3 has a temperature of 296 ...
physics - An automobile tire has a volume of 1.60 x 10-2 m3 and contains air at ...
thermal physics - An automobile tire has a volume of 1.60 x 10-2 m3 and contains...
physics - a room that measures 10.o ft wide, 32.0 ft long, and 8.00 ft high ...
science - What fossil fuel is pumped through underground pipes and what is the ...
physics - Compressing gases requires work and the resulting energy is usually ...
physics - Air (a diatomic ideal gas) at 30.0°C and atmospheric pressure is ...
physics - Air (a diatomic ideal gas) at 30.0°C and atmospheric pressure is ...
physics - Air (a diatomic ideal gas) at 30.0°C and atmospheric pressure is ...

For Further Reading

First Name:
School Subject:
Answer: