A girl weighing 42 kg eats bananas whose energy is 980 calories. If this energy is used to height h find the value of h. (J=4.2J calorie)

A boy weighing 42 kg eats bananas whose energy is 980 calories. If this energy is used to go to height h fing the value of h.

A boy weighing 50kg eats bananas. The energy constant of banana is 100cal , if this energy is used to lift the body from ground, then the height through which it is lifted is

A boy weighing 50kg eats bananas. The energy constant of banan is 100cal , if this energy is used to lift the body from ground, then the height through which his lifted is

A woman weighing 63 kg eats plum cake whose energy content is 9800 calories. If all this energy could be utilized by her, she can ascend a height of

Express BOT unit in calorie . (J = 4.2 /cal )

4500 J of energy is used to raise an object with a mass of 50 kg to a height h. Calculate h.

If a slice of bread can supply 100 kilocalorie of heat to a man, how many metres can a man weighting 60kg climb by using this energy? (Efficiency of working of the human body =30% J =4.2 joules per calorie and g=9.8ms^(-2) )