Answers by visitors named: Nilesh

please give the answer for this question.

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Two lead spheres whose diameters are 20 cm and 2 cm are placed with their centers 100 cm apart . Calculate the force of gravitation between the.(Density of lead=11500 kg/m3)

Calculate the temperature at which air posses the density equal to that of hydrogen at 0 degree .Density of air at Ntp is 14.4