Friday, July 24, 2015
Black Body Radiation
If the temperature of black body is increased by a factor of 2, the amount of energy and volume radiated increases by a factor of . . . . . . . . . .
Monday, July 20, 2015
Acceleration due to Gravity; The ratio of escape velocity.
The acceleration due to
gravity ( g ) on the surface of the Earth is approximately 2 . 6 times that on
the surface of the Mars . Given that the radius of Mars is about one half the
radius of the Earth , the ratio of the escape velocity on Earth to that on Mars
is approximately . . . . . . . . . . .
a ) 1 . 1
b ) 1 . 3
c ) 2 . 3
d ) 5 . 2
b ) 1 . 3
c ) 2 . 3
d ) 5 . 2
Tuesday, July 7, 2015
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A beam of proton ( q = 1.6 X 10 -19 C ) moves at 3 X 10 5 m/s through a uniform magnetic field with magnitude 4 T, that is directed along...
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(a) - ( G M m ) / ( a + b ) (b) - ( G M m ) [ ( 1 / a ) + ( 1 / b ) ] (c) – [ ( G M m ) / ...
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The acceleration due to gravity ( g ) on the surface of the Earth is approximately 2 . 6 times that on the surface of the Mars . Given tha...