Question 1 Calculate the work done in lifting 200kg of water through a vertical height of 6 m? Question 2 Define the term work? Question 3 What is the S.I. unit of work? Question 4 Is work a scalar or a vector quantity? Question 5 Define 1 joule of work? Question 6 What are the quantities on which the amount of work depends? Question 7 What is the condition … [Read more...] about Work
Work and energy
Work
Power
Question 1 A body does 20 joules of work in 5 sec.what is its power? Question 2 What is the power of a pump which takes 10 sec to lift 100 kg of water tank situated at a height of 20 m? Question 3 Define the term power? Question 4 Give the S.I. unit of power? Question 5 Define the term watt? Question 6 How many watts equal one horse power? Question 7 The … [Read more...] about Power
Law of conservation of energy
Question 1 Define the law of conservation of energy? Law of conservation of energy Whenever energy gets transformed,the total energy remains unchanged. According to this law,energy can only be converted from one form to another,it can neither be created or destroyed.The total energy before and after transformation remains same. Ball,mass,m,height,h,above the ground … [Read more...] about Law of conservation of energy
Transformation of energy
Question 1 What do you mean by transformation of energy? Question 2 Explain the transformation of energy in Thermal power house? Question 3 Explain the transformation of energy in electric motor? Question 4 Explain the transformation of energy in generator? Question 5 Explain the transformation of energy in electric bulb? Transformation of Energy The change of … [Read more...] about Transformation of energy
Forms of energy
Question 1 Calculate the kinetic energy of a body of mass 2 Kg moving with a velocity of 0.1 m/s? Question 2 How much work should be done on a bicycle of mass 20Kg to increase its speed from 2m/s to 5m/s? Question 3 What are the various forms of energy? Question 4 What do you understand by kinetic energy of a body? Question 5 Write an expression for the kinetic … [Read more...] about Forms of energy
Energy
Question 1 Define the term energy? Question 2 What is the S.I. unit of energy? Question 3 Is energy a vector or scalar quantity? Energy Energy is the ability or capability to do work . The sun is the biggest source of energy. Ex:1)When an object is raised to a certain height it gets the capability to do work. 2)When a raised hammer fall on a nail placed on a … [Read more...] about Energy