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4 years ago

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The colors you see during a sunset are caused by _____. the refraction of light by the atmosphere the absorption of light by the

atmosphere the reflection of light by the atmosphere

1 answer:

love history [14]4 years ago

6 0

Answer: the refraction of light by the atmosphere

Explanation: Refraction is the phenomenon in which there is a change in direction of light passing from one medium to another or from a gradual change in the medium.

Here in case of sunset, the sun rays passes through the varying density of atmosphere because of varying concentrations of dust particles.

Reflection is the phenomenon in which the light bounces back after falling on a surface.

Absorption is the phenomenon in which matter captures the electromagnetic radiations and thus the energy of photons is converted to internal energy of the system.

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3 years ago

Read 2 more answers

You want to see how your new belt buckle matches your new hat. Your eyes are 114 mm below the top of the hat and 800 mm above th

damaskus [11]

Answer:

$x=0.057m$

$h=0.457m$

Explanation:

From the question we are told that

Distance of eyes from the top of hat $d_1=114mm$

Distance of eyes from buckle $d_2=800mm$

Generally position of mirror relative eyes x is mathematically given as

$x=\frac{114}{2}$

$x=57mm$

$x=0.057m$

Generally the height of the mirror h is mathematically given as

$h=\frac{(Buckle\ below\ the\ hat)+(Buckle\ below\ the\ hat)}{2}$

$h=\frac{(114)+(800)}{2}$

$h=457mm$

$h=0.457m$

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3 years ago

Schopenhauer thought that treating others with compassion was one of the few ways to make the world better.

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3 years ago

A 1,250 W electric motor is connected to a 220 Vrms, 60 Hz source. The power factor is lagging by 0.65. To correct the pf to 0.9

Black_prince [1.1K]

Answer:

$C = 46.891 \mu F$

Explanation:

Given data:

v = 220 rms

power factor = 0.65

P = 1250 W

New power factor is 0.9 lag

we knwo that

$s = \frac{P}{P.F} < COS^{-1} 0.65$

$S = \frac{1250}{0.65} < 49.45$

s = 1923.09 < 49.65^o

s = [1250 + 1461 j] vA

$P.F new = cos [tan^{-1} \frac{Q_{new}}{P}]$

solving for $Q_{new}$

$Q_{new} = P tan [cos^{-1} P.F new]$

$Q_{new} = 1250 [tan[cos^{-1}0.9]]$

$Q_{new} = 605.40 VARS$

$Q_C = Q - Q_{new}$

$Q_C = 1461 - 605.4 = 855.6 vars$

$Q_C = \frac[v_{rms}^2}{xc} =v_{rms}^2 \omega C$

$C = \frac{Q_C}{ v_{rms}^2 \omega}$

$C = \frac{855.6}{220^2 \times 2\pi \times 60}$

$C = 4..689 \times 10^{-5}$ Faraday

$C = 46.891 \mu F$

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3 years ago

a 3-newton force and a 4-newton force are acting concurrently on a point. which force could not produce equilibrium with these t

Paladinen [302]

A force that cannot produce equilibrium with these two forces must be less than 7 N or greater 7 N.

The given parameters;

<em>3 Newton force </em>
<em>4 Newton force</em>

A body is said to be in equilibrium state when the net force on the body is zero.

A force that produce equilibrium among two forces acting concurrently is known as equilibrant force. This force is usually equal to sum of the two concurrent forces.

$F_1 + F_2 = F_3$

where;

F₁ and F₂ are the concurrent forces
F₃ is the equilibrant force

From the given parameters;

$F_1 + F_2 = 3 \ N + 4\ N = 7\ N$

Thus, a force that cannot produce equilibrium with these two forces must be less than 7 N or greater 7 N.

Learn more here:brainly.com/question/12582625

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2 years ago