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Work done by a body is the product of pr...

Work done by a body is the product of pressure and displacement.

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The work done by a body is the product of force and :

Work done upon a body is

Work done by a body is the product of _____________ and displacement.

STATEMENT -1 : A point charge be rotated in a circle around a fixed charge, the work done by electric field of fixed charge will be zero. and STATEMENT -2 : Work done is the dot product of force and displacement.

State the following statements as true or false. a. The work done by a force on a body is equal to the dot product of the force and displacement of the body. b. Instantaneously, work is not defined. c. When several forces act on a body, the total work is the same as the work done by their resultant.

Mathematically, work is defined as the product of froce and displacement through which force acts. If F is the applied force, 'S' is the displacement in the direction of applied force and W is the work done, then : Work done = Force xx Displacement through which force acts. W = F xx S The SI unit of work is Joule (J) and cgs unit is erg. 1 J = 10^(7) erg. How much work is done by a person who uses a force of 50 N to move a grocery buggy 10 m ?

Mathematically, work is defined as the product of froce and displacement through which force acts. If F is the applied force, 'S' is the displacement in the direction of applied force and W is the work done, then : Work done = Force xx Displacement through which force acts. W = F xx S The SI unit of work is Joule (J) and cgs unit is erg. 1 J = 10^(7) erg. 6000 J of work is done to move a rock 25 m. How much force was applied ?

Assertion : When pendulum bob is rotating in a circle around the point of suspension then work done by tension and the weight is zero . Reason : Work done by a force is defined as dot product of force vector and displacement vector .

BEIITIANS-ENERGY AND WORK -SUMMATIVE WORKSHEET
  1. During photosynthesis, the energy changes to chemical energy.

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  2. Work is done when we hold a pile of books in our hands.

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  3. Work done by a body is the product of pressure and displacement.

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  4. When electric current flows through a bulb, the electric enery first c...

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  5. When we speak in front of a microphone the electric energy changes int...

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  6. During photosynthesis heat energy changes into chemical energy.

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  7. In charging a car battery, the chemical energy changes into electric e...

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  8. Nuclear energy is released in the form of light energy.

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  9. When a stone is projected vertically upwards its kinetic energy change...

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  10. Kinetic energy of a body decreases with the increase in mass.

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  11. Unit of energy is SI system is

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  12. A stretched bow and arrow system has kinetic energy.

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  13. The energy possessed by an electric cell is chemical energy.

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  14. During photosynthesis, the light energy changes into chemical energy.

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  15. An electric bulb converts electric energy into heat energy.

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  16. The source of energy in a nuclear bomb is chemical energy.

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  17. A freely falling stone possesses K.E and P.E.

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  18. In hydroelectric stations, the potential energy of flowing water chang...

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  19. The work done by a body is the product of force and :

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  20. Name and define SI unit of work.

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