A balloon of diameter 20m weights 100kg calculate its payload if it filled with helium at 1.00 atm and `27^@C`

Pay load is defined as the difference between the mass of displaced aiir and the mass of the balloon. Calculate the pay load when a balloon of radius 10m, mass 100 kg is filled with helium at 1.66 bar at 27^(@)C . (R=0.083 bar *dm^(3)*K^(-1)*mol^(-1) and density of air =1.2kg*m^(-3) )

Pay load is defined as the difference between the mass of displaced air and the mass of the balloon .calculate the payload when a balloon of radius 10 m mass 100 kg is filled with helium at 1.66 ber at 27^@C (Density of air =1.2kgm^(-3) ) and R = 0.083 bar dm^3k^(-1)mol^(-1)

A spherical balloon with a diameter of 21 cm is to be filled with hydrogen gas at STP from a cylinder of H_(2) gas at 20 atm pressure and 27^(@)C . If the cylinder can hold 2.82 L of water, how many balloon can be filled with the hydrogen gas from the cylinder?

A bag of wheat weights 75 kg. Calculate the hight to which it should be raised so that its potential energy is 7350 J. (Given g= 9.8 m//s^(2))

The weight of a wooden box made of wooden planks with the thickness of 5 cm along with its covering is 115·5 kg. But the weight of the box filled with rice is 880·5 kg. The length-and breadth of inner side of the box are 12 dcm and 8·5 dcm respectively and the weight of 1 cubic dcm rice is 1 ·5 kg. Determine the inner height of the box. Also determine the total expenditure to colour the outside of the box, if the rate is ₹ 1 ·50 per sq-dcm.

A balloon rising vertically up with uniform velocity 15 "m.s"^(-1) releases a ball at a height of 100 m. Calculate the time taken by the ball to hit the ground. Take g = 10"m.s"^(-2) .