u200e

Delta U= + 200 J for a system that gives off 200 J of heat and

{a_(1),a_(2),.......a_(4)....} is a progression where a_(u)=(u^(2))/(u^(3)+200). The largest term of this progression is

A nuclear reactor using .^(235)U generates 250 MW of electric power. The efficiency of the reactor (i.e., efficiency of conversion of thermal energy into electrical energy) is 25% . What is the amount of .^(235)U used in the reactor per year? The thermal energy released per fission of .^(235)U is 200 MeV .

The energy released during the fission of 1kg of U^(235) is a E_1 and that product during the fusion of 1 kg of hydrogen is E_2 . If energy released per fission of Uranium - 235 is 200 MeV and that per fusion of hydrogen is 24.7 MeV , then the ratio E_2/E_1 is

Delta U for a system that does 1000 cal of work on the surroundings when 200 cal of heat are absorbed by the system is ______ .

Which parts of U.S.A and Europe have density more than 200 persons per sq. km?