Compressed air can be pumped underground into huge caverns as a form of energy storage. the volume of a cavern is 4.40 105 m3, and the pressure of the air in it is 6.20 106 pa. assume that air is a diatomic ideal gas whose internal energy u is given by u = 5/2 nrt. if one home uses 22.0 kw · h of energy per day, how many homes could this internal energy serve for one day?

86112 homes

Solution:

As per the question:

Volume, V =

Pressure, P =

Internal energy, U =

Energy usage of one home = 22.0 kWh

Now,

We know from the ideal gas equation:

PV = nRT

Thus we can write:

Energy usage of one home =

Now,

No. of homes that could serve this internal energy for a day is given by:

where is the photo and the answer choices?

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this