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The were and tear in the machine part is...

The were and tear in the machine part is due to_____.

A

Lubricant

B

Treads on a tyre

C

Strearnlining

D

Polishing

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SURA PUBLICATION-Force and Pressure-Exercise
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  4. Which of the following increases friction?

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  6. The atmospheric pressure on the surface of the earth is about

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  7. The SI unit of force is

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  8. The SI unit of surface tension is.

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  9. The amount of force acting per unit length on the surface of a liquid ...

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  10. At sea level, the height of the mereury columm is around mm.

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  11. Friction existing during the motion of bodies is called friction .

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  12. If the same force is made to act on a larger area, the pressure .

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  13. At the give depth, a liquid exerts pressure in all direction.

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  14. The presstre exerted by the air around us is called pressure.

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  15. At higher altitudes, atmospheric pressure is.

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  16. Friction depends on the of two surface in contact.

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  18. The force Which acts in order to oppose the relative motion of the lay...

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  19. The automobile brake system works according to.

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