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Amiraneli [1.4K]
3 years ago
14

Why does laser beam might appear blue and another laser beam might appear red?

Physics
1 answer:
lakkis [162]3 years ago
6 0
One thing about a laser is that the light it puts out is all one single sharp
color (wavelength) of light with no other wavelengths mixed in with it. 
That wavelength is a different one for the different kinds of material
that are used to do the "lasing" ... generating the light.  There are a
couple of different wavelengths of infrared lasers, and several different
types of lasers in the visible range.
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A long, cylindrical solenoid with 100 turns per centimeter has a radius of 14.7 cm. If the current through the solenoid changes
oee [108]

Answer:

Explanation:

Given:

dI/dt = 6.21 A/s

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Inductance, L = uo × n^2 × A × l

L/l = 4pi × 10^-7 × (100 × 100)^2 × pi × 0.147^2

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Since the noble gases are stable (VERY unreactive), oxygen would like to look like one in terms of the number and arrangement of
iogann1982 [59]

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3 years ago
A hockey player strikes a puck that is initially at rest. The force exerted by the stick on the puck is 975 N, and the stick is
Anna007 [38]

Explanation:

Given that,

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(a) We need to find the impulse imparted by the stick to the puck.

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Let the speed be v.

As impulse is equal to the change in momentum.

J=m(v-u)\\\\4.7775=1.67(v-0)\\\\v=\dfrac{4.7775}{1.67}\\\\v=2.86\ m/s

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A rock on earth has a weight of 135 Newtons. What is its mass?
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