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The distance of Pluto from the sun is 40...

The distance of Pluto from the sun is 40 times the distance of earth. If the masses of earth and Pluto be equal, what will be ratio of gravitational forces of sun on these planets ?

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SL ARORA-FLUIDS AT REST-Problem for self practice
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  7. The average mass that must be lifted by a hydraulic press is 80 "kg".I...

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  8. In a hydraulic press used for compressing cotton the area of the pisto...

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  9. An automobile sack is lifted by a hydraulic jack that consists of two ...

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  10. What is the minimum pressure required to force blood from the heart to...

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  11. A column of water 40 cm height supports a 30 cm column of an unknown l...

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  12. If the water pressure gauge shows the pressure at ground floor to be 2...

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  13. A cylinderical jar of cross-sectional area of 50 cm^(2) is filled with...

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  14. Water is filled in a flask upto a height of 20cm. The bottom of the fl...

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  15. The density of asir ner earth's surface is 1.3kgm^-3 and the atmospher...

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  16. A vertical U-tube of uniform inner cross-section contains mercury in ...

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  17. Two liquids of specific gravity 1.2 "and" 0.84 are poured into the l...

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  18. The area of cross-section of the wider tube shown in fig., is 800cm^(2...

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  19. A barometer kept in an elevator accelerating upwards reads 76 cm of Hg...

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  20. How much will a body of 70 N weight in water if it displaces 20 ml of...

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  21. A solid weighs 6 kg in air. If its density is 2000 "kg" m^(3) what wil...

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