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3.0 ms^(-2) = ……….. Kmh^(-2)...

`3.0 ms^(-2) = ……….. Kmh^(-2)`

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`3.0 ms^(-2)=3(m)/(s^(2))`
`=3xx(10^(-3)km)/(((1)/(3600))^(2)h^(2)) " " ( :. 1h=3600s)`
`=3xx10^(-3)xx(3600)^(2) km h^(-2)`
`=38880 km h^(-2)`
`=3.888xx10^(4)=3.9xx10^(4) km h^(-2)`
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KUMAR PRAKASHAN-UNITS AND MEASUREMENT-SECTION -B (NUMERICALS) (NUMERICAL FROM TEXTUAL EXERCISE)
  1. 1 kg m^(2)s^(-2) =………. g cm^(2) s^(-2)

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  2. 1 m ……….ly

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  3. 3.0 ms^(-2) = ……….. Kmh^(-2)

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  4. G = 6.67xx10^(-11) N m^(2)(kg)^(-2) = ………. (cm)^(3)s^(-2)g^(-1).

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  5. A calorie is a unit of heat (energy in transit) and it equals about 4....

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  6. Explain this statement clearly : "To call a dimensional quantity 'la...

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  7. A new unit of length is chosen such that the speed of light in vacuum ...

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  8. Which of the following is the most precise device for measuring length...

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  9. A student measures the thickness of a human hair by looking at it thro...

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  10. You are given a thread and a metre scale. How will you estimate the di...

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  11. A screw gauge has a pitch of 1.0mm and 200 divisions on the circular s...

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  12. The mean diameter of a thin brass rod is to be measured by vernier cal...

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  13. The photograph of a house occupies an area of 1.75 cm^(2) on a 35 mm s...

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  14. State the number of significant 0.007 m^(2)

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  15. The length , breadth and thickness of a rectangular sheet of metal are...

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  16. The mass of a box measured by a grocer's balance is 2.30 kg. Two gold ...

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  17. A physical quantity P is related to four observables a,b,c and d as fo...

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  18. A book with many printing errors contains four different formulas for ...

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  19. A famous relation in physics relates 'moving mass' m to the 'rest mass...

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  20. The unit of length conventent on the atomic scale is known as an angs...

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