Common Numerical Values in Science

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Common Numerical Values in Science

Common Numerical Values in Science

Common Numerical Values in Science

 1. ð= 3.1416  memrizing aid: 

 2. Velocity of light= 3108 m/s 

3. Magnitude of universal gravitational constant = 6.6710-11 Nm2/kg2 

4. Acceleration due to gravity on the surface of the earth = 9.8 m/s2

5. Mass of ther earth = 61024 kg

6. Average radius of the earth = 6.4106m 

7. 1 H.P. = 746 watt= 0.746 kilowatt 

8. Lower fixed point of Celsius Scale = 00C

9. Upper fixed point of celcius scale = 1000C

10. Lower fixed point of Fahrenheit scale = 320F

11. Upper fixed point of  Fahrenheit scale = 2120C

12. 1 caalorie = 4.186 Joule

Common Numerical Values in Science 

13. Specific heat of water = 4.18103 J/ kg/0C

14. Specific heat of ice = 2.14103 J/ kg/0C

15. Latent heat of fusion of ice = 80 cal/gm=336103 J/ kg

16. Latent heat of vapourisation of water = 540 cal/gm=2268103 J/ kg

17. 1 Light year = 9.46071012 km

18. 1 Parsec = 3.26 Ly 

19. Astronomical unit (AU) = 1.496  108 km

20. Astronomical Year = 225  106 km

21. Diameter of the sun = 1.39  106 km

22. Distance of earth from the sun = 150  106 km

23. Distance of the moon from the earth = 3.84  105 km

24. Escape velocity = 11.2 km/s 

25. Mass of a hydrogen atom = 1.67 10-27 kg

26. 1 atmospheric presssure ( 1 atmm) 

= 1.01325 105 N/m2

=1.01325  105 Pascals 

Common Numerical Values in Science

27. At N.T.P., the gramm molecule volume of a gas = 22.4 litres. 

28. Avogrdro’s number = 6.00221  1023 per mole. 

29. Magic numbers : 2, 8, 8, 18 and 32 numbers 

30. Number of periods in Modern Periodic Table = 7 

31. Nummber of groups in Modern Periodic Table = 18 

32. 1 Angstrom (A0) = 10-8 cm= 10-10 m. 0 0 0

Common Numerical Values in Science

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