A 1000kg piston encloses 32g of oxygen gas at a temperature of 27^@Cin a vertical cylinder of basearea of 4m^2 . The air pressure outside is 1xx10^5 Pa . The axis of the cylinder is vertical, and the piston can move in it without friction. If heat to be transferred to the gas to raise the piston by 20cm is 7 kilo joule/N where N is an integer. Then .N. is equal to. (R =25/3J//"mol" K)

A 1000kg piston encloses 32g of oxygen gas at a temperature of 27^@Cin

1.	A 1000kg piston encloses 32g of oxygen gas at a temperature of 27^@Cin a vertical cylinder of basearea of 4m^2 . The air pressure outside is 1xx10^5 Pa . The axis of the cylinder is vertical, and the piston can move in it without friction. If heat to be transferred to the gas to raise the piston by 20cm is 7 kilo joule/N where N is an integer. Then .N. is equal to. (R =25/3J//"mol" K)
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