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 … [Read more...] about Transformation of Energy
Class 9
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 … [Read more...] about Energy
Relative Density
Relative Density The density of a substance is defined as mass per unit volume. The relative density of a substance expresses the heaviness or density of the substance in comparison to water. For Example : Relative density of iron is 7.8 means iron is 7.8 times … [Read more...] about Relative Density
Pressure in Liquid
Question 1 what is meant by the term buoyancy? Question 2 Why does a block of wood held under water rise to the surface when released? Question 3 Define buoyant force? Question 4 Name the factors on which buoyant force depends? Question 5 In which direction does the buoyant force on an object due to a liquid act? Question 6 Name the factors which makes heavy … [Read more...] about Pressure in Liquid