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1 calorie=4.2 J where IJ= 1 kg m^2s^-2. ...

1 calorie=4.2 J where IJ= 1 kg `m^2s^-2`. Suppose we employ a system of units in which the unit of mass is `alpha` kg, the unit of length is `beta` m and the unit of time `gamma s`, show that a calorie has a magnitude `4.2alpha^-1beta^-2gamma^-2` in the new system.

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NCERT TELUGU-UNITS AND MEASUREMENT-EXERCISE
  1. 1 calorie=4.2 J where IJ= 1 kg m^2s^-2. Suppose we employ a system of ...

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

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  3. A new unit of length is chosen so that the speed of light in vaccum is...

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

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  5. A student measures the thickness of a human hair using a microscope of...

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

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

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

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  9. State the numberof significant figures in the 0.007 m^2

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  10. State the number of significant 0.0006032 m^(2)

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  11. State the numberof significant figures in the 0.2370 gcm^(-3)

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  12. State the numberof significant figures in the 6.320 J

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  13. State the number of significant figures in the following 6.032

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  14. State the number of significant 0.0006032 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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