.1 a) What is black body and black body radiation? Write down the Plank’s Postulates
and derive Plank’s energy density formula? Show that the Plank’s energy density is
formula valid for all types of wave length.
b) The effective surface temperature of the Sun is 5800K at what wave length
would you expect the Sun to radiate most strongly? (Wien’s constant = 2.898 x 10-3 m. K)
Answers: 3
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Find the momentum for a 2.6-kg brick parachuting straight downward at a constant speed of 8.4 m/s .
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If a stone with an original velocity of 0 is falling from a ledgeand takes 8 seconds to hoybthe ground whays the final velocity of the stone
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Physics, 22.06.2019 11:20
More solar radiation is absorbed by earth’s surface than by
Answers: 1
.1 a) What is black body and black body radiation? Write down the Plank’s Postulates
and derive Pla...
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