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Science Quiz
/ Physical Constants
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Science
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Can you name the physical constants to three (or four) significant digits?
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Constant
Value
Units
Speed of light (c)
x 10
8
m/s
Avogadro's number (N
A
)
x 10
23
mol
-1
Electron mass (m
e
)
x 10
-31
kg
Proton mass (m
p
)
x 10
-27
kg
Elementary charge (e)
x 10
-19
C
Planck constant (h)
x 10
-34
m
3
/kg·s
2
Molar gas constant (R)
J/mol·K
Electric constant (ϵ
0
)
x 10
-12
F/m
Gravitational constant (G)
x 10
-11
m
3
/kg·s
2
Bohr radius (a
0
)
x 10
-11
m
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Created Sep 23, 2009
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Tags:
constant
,
digit
,
four
,
physical
,
significant
,
three
,
unit
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