Determine the wave length of a neutron that has a velocity
Determine the wave length of a neutron that has a velocity of 200. cm/s ( the mass of a neutron = 1.675 x 10-27kg.
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The far point of a near-sighted person is 6.5 m from her eyes, and she wears contacts which facilitate her to see far-away objects clearly. A tree is 23.8 m away and 2.8 m high.
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Determine the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n=4 to the n=1principal energy level. Where Hydrogen En= -2.18x1018J(l/n2)
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