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MODERN PUBLICATION-WORK AND ENERGY-EXERCISE
- What will be the kinetic energy of a body when its mass is made four t...
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- A body is thrown vertically upwards. Its velocity goes on decreasing. ...
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- State the energy conversion in a dry cell.
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- A coolie is walking on a railway platform with a load of 30 kg on his ...
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- What is the work done by earth in moving around the sun?
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- When displacement is in a direction opposite to the direction of force...
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- Define 1kWh.
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- In an oscillating pendulum, at what positions are the potential and ki...
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- How many joules are present in 1 kilowatt hour?
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- Name the term used for the sum of kinetic and potential energy of a bo...
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- What type of energy conversion takes place in a thermal power plant?
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- If the heart works 60 joules in one minute. What is its power?
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- State the value of commercial unit of electrical energy in joule.
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- At what rate is electrical energy consumed in a 60 W bulb?
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- Give an example of a body having potential energy due to change in sha...
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- If the speed of the body is halved. What is the change in kinetic ener...
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- Under what conditions is work said to be done?
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- Write an expression for kinetic energy of an object. On what factors d...
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- Derive a relationship between kinetic energy and linear momentum.
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- Two bodies of mass m1 andm2(>m1) have equal linear momentum. Which bod...
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