Units And Measurements Flashcards by joel mammen isaac

1 amu = … joules (=931MeV)

1.5 x 10^-10 joules

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Velocity gradient =

Velocity / distance

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Bq full form

Bacquerel

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1 rad/s = ….. rev/min

9.6 rev/min

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1 ly = ….metres

9.461 x 10^15 metres

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1 N = …. poundals

7.23 poundals

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Rd full form

Rutherford

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1 amu = … MeV

931 MeV

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1 slug = …. kg

14.6 kg

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1 Chandrashekhar limit =

1.4 x mass of sun

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Ci full form

Curie

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1 Rd = … dps

10^6 dps

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1 weber = ….. maxwell

10^8 maxwell (magnetic flux)

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1 T = … gauss

10^4 gauss
Or
10^4 G

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Planck’s Constant

6.62 x 10^-34 J-s

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1 amu = .. g

1.66 x 10^-24 gram

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1 Ci = … dps

3.7 x 10^10 dps

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1 parsec or parallactic second = …. ly

3.26 ly

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Btu full form

British thermal unit

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Gravitational constant

6.67 x 10^-11 N-m^2/kg^2

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Who showed weak nuclear force and electromagnetic force were diff aspects of single electro-weak force

Sheldon Glashow
Abdus Salam
Steven Weinberg

1979

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Stefan-Boltzmann constant

5.67 x 10^-8 W/m^2-K^4

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Pressure gradient =

Pressure/distance

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1 rev/min = … rad/s

0.1 rad/s

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1 rad = .... °

57.3°

1 emu / 1 ab coulomb = ... coulomb

1 Bq = .... dps

1 dps

International year of physics

2005

1 metric tonne = .. kg

1000 kg

Boltzmann constant

1.38 x 10^-23 J/K

Value of g in F.P.S unit

32 ft/s^2

1 AU = .... metres

1.49 x 10^11 m

Who experimentally verified predictions of electro-weak theory

Carlo Rubia Simon Vander Meer 1984

1 oersted = ........ A/m

79.55 A/m (intensity of magnetic field) | Approximately 80A/m

1 quintal = ... kg

100 kg

Universal gas constant

8.31 J/mol-K

1 Btu = ..... joules

1055 joules

Bohr magneton

9.27 x 10^-24 J/T

1 poiseuille = ..... poise (For Viscosity)

1 hectare = ... acres

2.5 acres

1 esu = .... stat coulomb

1 stat coulomb

Permittivity of free space value

8.85 x 10^-12 C^2/N-m^2

1 Bohr radius =

.529 Amstrong

Poiseuille unit

Pa-s Or N-s/m^2

1 mile = .... metres

1600 metres

Permeability of free space =

1.27 x 10^-6 Wb/A-m ( 4πx10^-7)

1 torr = .... Pa

153 Pa

1 AU is defined as

The avg distance btw sun and earth

1m = .... inches

39.4 inches

1 year = ... seconds

31.56 x 10^6 s

1 nautical mile = .... metres

1852 metres

1 feet = ... cm

30.5 cm

1m = ...... yard

1.1 yards

1 stat coulomb / 1 esu = .... coulomb

3.33 x 10^-10 coulomb

1 ton = ... kg

907 kg

Rydberg constant

1.1 x 10^7 m^-1

1 T =

1 weber/m^2 (magnetic flux density)

1 shake =

10^-8 second

1 emu = ... ab coulomb

1 ab coulomb

1 lb = .... grams

454 g

Electron rest energy

.511 MeV

1 lb-wt = .... poundal

32 poundal

1 kg = .....pounds

2.2 pounds

1 ounce = ..... grams

28 grams

1 parsec or parallactic second = ..... metres

3.08 x 10^16 metres

1 carat

200 mg

1 Roentgen

2.58 x 10^-4 C/kg

1 barn =

10⁻²⁸m²

1 are =

10² m²

1 hectare =

10⁴ m² (100 are)