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kari74 [83]
3 years ago
15

What are some ways that light can be controlled and what does it do to the light

Physics
1 answer:
marusya05 [52]3 years ago
7 0
-- pass the light through a lens
The path of the light is bent (refracted) to a new direction.

-- bounce the light off a shiny surface
The light is sent back (reflected) in the direction from which it arrived.

-- pass the light through a prism
The light is spread out according to the different wavelengths
that may be in it.

-- put something black in the light's path
The light is completely absorbed and is never seen again.

-- turn the light off
The source stops emitting light.

-- throw a towel over the lamp
The light is absorbed in the towel, and not seen outside of it.
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Hypoventilation dramatically increases carbonic acid concentration and involves________?
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Extremely slow breathing
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Part of the suns energy that reaches the Earths surface is absorbed by land and water as heat. The earths surface then releases
IceJOKER [234]

Answer: i think A is the answer

Explanation:

3 0
4 years ago
A pulse of light takes 3.00 ns to travel through air from an emitter to a detector. When a piece of transparent material with a
cupoosta [38]

Answer:

(a) 1.75\times10^8\text{ m/s}

(b) 1.71

Explanation:

(a) The difference in the times of travel in the two case = 3.20 - 3.00 = 0.20\text{ ns} = 2.0\times10^{-9}\text{ s}

This difference is the time in the transparent material. With a thickness of 35.0 cm, the speed in the material is

v = \dfrac{35 cm}{2.0\times10^{-9}\text{ s}}=\dfrac{0.35 m}{2.0\times10^{-9}\text{ s}} = 1.75\times10^8\text{ m/s}

(b) The refractive index of the material is the ratio of the velocity of light in  vacuum to its velocity in the material. Using speed of light in vacuum as c = 3.00\times10^8\text{ m/s}, the refractive index, n, is

n=\dfrac{c}{v} = \dfrac{ 3.00\times10^8\text{ m/s}}{1.75\times10^8\text{ m/s}}= 1.71

4 0
3 years ago
A)Watt (W) is a derived unit.
Aleks04 [339]

Answer:

a) Watt is a derived unit because it's not a “base unit.”

b) The atomic clock is suitable for measuring time because natural atomic oscillations happen at a higher frequency and as a result they are more stable.

c) There is fluctuation in time measured by a pendulum clock because the pendulum rod changes in length slightly with changes in temperature, causing changes in the rate of the clock. An increase in temperature causes the rod to expand, making the pendulum longer, so its period increases and the clock loses time.

D) The weight of an object is more at pole and less at equator of the earth because the distance of the pole is less than the distance of the equator from the centre of the earth.

e) The weight of an object on the moon is about one-sixth the weight it would have on the earth because the moon's gravitation force is determined by the mass and the size of the moon. Hence, the weight of an object on the moon is 1/6th its weight on the earth.

4 0
3 years ago
A beam of light of wavelength lambda = 541nm is normally incident on a diffraction grating which has 600 lines m * m ^ - 1 Deter
MrMuchimi

Answer:

Angle of diffraction for second order maxima is θ = 18.941°

Explanation:

From the question it is given that

wavelength of incident light = λ = 541 nm = 541 x 10^-^9 m

order of maxima = n =2

diffraction grating has 600 lines per mm

⇒ distance between two slit is \frac{1mm}{600} = 1.66 x 10^-^6 m

using the relation of Braggs diffraction formula i.e.,

2dsinθ = nλ ..................................(1)

where, d = distance between two lines of grating

θ is the angle of diffraction

n= order of maxima

λ is the intensity of incident photon

on substituting the respected values in relation (1) we get,

2 x 1.66 x 10^-^6m sinθ = 2 x 541 x 10^-^9 m

⇒ sinθ = 0.3246

⇒ θ = sin^-^1(0.3246) = 18.941 °

8 0
3 years ago
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