From the following activities find out w...

From the following activities find out whether work is positive, negative or zero. Give reasons for your answers: A coolie is standing with a load on his head.

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CHETANA PUBLICATION-WORK AND ENERGY-EXERCISE

From the following activities find out whether work is positive, negat...
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Forces are of …..…… types
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Fill in the blanks with appropriate words and writw the completed stat...
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S.I. unit of energy is….
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…………..is the capacity to do work.
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Name the following SI unit of energy
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Name the following The relationship between 1 joule and 1erg .
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State whether the following statements are true or false: Power is a ...
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State whtether the following statement are true or false. Water stored...
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Wind can move the blades of a windmill
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A stretched rubber band when released regainsits original length
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An exploding fire cracker lights as well as makes a sound.
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Solve the following examples: Ravi applied a force of 10 N and moved ...
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500 kg water isstored in the overhead tank of a 10 m high building.Cal...
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1 kg mass has a kinetic energy of 2 joule. Calculate its velocity
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Derive an expression for potential energy.
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A 25 W electric bulb is used for 10 hours every day. How much electric...
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If a TV of rating 100 W is operated for 6 hrs per day,find the number ...
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Solve the following examples: If a 1200 W electric iron is used daily...
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Answer the following questions: Derive the formula for the kinetic en...
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State the expression for work done when displacement and force makes a...
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