A heat engine of efficiency 40% takes 10kJ of heat energy every second. It is used to lift a weight of 2000kg. Find the height to which the weight can be raised in 30s. [Take `g= 10ms^(-2)`]

Energy stored in a condenser of capacity 10 uF , charged to 6kV is used to lift mass of 10 gm. The height to which the body can be raised is (Take g=10m//s^(2))

A crane lifts a mass of 100 kg to a height of 10m in 20s . The power of the crane is (Take g = 10 ms^(-2))

A crane lifts a mass of 100 kg to a height of 10 m in 20 s. The power of the crane is (Take g = 10 m s^(-2) )

A can of water of volume 0.5 m^(3) at a temperature 30^(@)C is cooled to 15^(@)C . Neglect heat capacity of the can. If the amount of heat released by water is used to a box of weight 10 kg, find the height to whilch it can be lifted. Given that specific theat of water is 4200 J//kg.^(@)C . Take g=10m//s^(2) .

Calculate the worked done in lifting a 300N weight to a height of 10m with an accelertaion 0.5ms^(2) . Take g= 10ms^(-2) .

The energy stored in a condenser of capacity 10 muF , charged to 6 kV is used to lift a body of mass of 10 gm. What is the height to 2hich the body can be raised? (g=10m//s^(2))

The mass of an object whose weight is 50 N is x kg. Find x. (Take g = 10 ms^(-2) )

230 joules were spent inlifting a 10kg wieight to a height of 2m. Calculate the acceleration with which it was raised Take g= 10ms^(2) .