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denpristay [2]
3 years ago
7

Two students are looking at a brightly lit full Moon, illuminated by the reflected light from the Sun. Consider thefollowing dis

cussion between the two students about what the spectrum of moonlight would look like.Student
1: I think that moonlight is just reflected sunlight, so we will see the Sun’s absorption line spectrum.Student
2: I disagree.An absorption spectrum has to come froma hot, dense object. Since the Moon is not a hot, dense object, it can’t give off an aborption line spectrum.Do you agree or disagree with either or both of the students
Physics
1 answer:
BartSMP [9]3 years ago
3 0

Answer:

I agree with the student that think that moonlight is just reflected sunlight, so we will see the Sun’s absorption line spectrum.

Explanation:

Absorption spectrums occur when a white light is passed through a gas. Or simply a light from a hot source passes through a cooler gas. The moon itself is a reflection of the sun, so when it reflects the light from the sun, absorption spectrum lined can be seen. Note that it is the hot gases like hydrogen, oxygen etc in or around the sun that cause absorption spectrum.

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Copernicus patterned his concept of the solar system after that of
Rasek [7]

Answer:

Aristarchus

Explanation:

don't feel like it

3 0
2 years ago
In about 5 billion years, at the end of its lifetime, our sun will end up as a white dwarf, having about the same mass as it doe
vitfil [10]
It is fine to use the equation given by Plitter, since we are told that the mass is about the same as it is now, and I seriously doubt the original question wants the student to go into relativistic effects, electron degeneracy pressure and magnetic effects that govern a real white dwarf star.
There is no need to make it unnecessarily complicated, when the question is set at high school level.  The question asks, given a particular radius, and a given mass, what will the density be (which in this case will be the average density).   To answer the question, one needs to know the mass of the sun (which is about 2×1030 Kg.  One needs to convert the diameter to a radius, and then calculate the spherical volume of the white dwarf.  Then one can use the formula given above, namely density=mass/volume
8 0
3 years ago
Con 110
exis [7]

Answer:

<em>C</em>

Explanation:

<em>Tennis would belong to net wall games .</em>

3 0
3 years ago
A soccer ball is kicked At 8m/s. It lands on the ground after being in the air for .85 seconds. At what angle is it kicked?
SpyIntel [72]

If ball remains in air for total time T = 0.85 s

this is also known as time of flight

In order to find the time of flight we can use kinematics

\Delta Y = v_y*t + \frac{1}{2}at^2

so for complete motion its displacement in y direction will be zero

0 = v_y* 0.85 + \frac{1}{2}(-9.8)(0.85^2)

0 = v_y*0.85 - 3.54

v_y = 4.165 m/s

now we know that net velocity of the ball is 8 m/s

while is y direction component we got is vy = 4.165 m/s

now by component method we can say

v_y = v sin\theta

4.165 = 8 sin\theta

\theta = sin^{-1}\frac{4.165}{8}

\theta = 31.4^0

so it is projected at an angle of 31.4 degree above horizontal

8 0
3 years ago
What is the final velocity of the ball that is dropped from a height of 200m?
Hoochie [10]

The final velocity of the ball that is dropped from a height of 200m is v = 44.73 m/s .

<h3>What is velocity with example?</h3>

The rate at which an object is travelling in one direction is referred to as its velocity. an automobile traveling north on a highway, or a rocket taking off. Its velocity vector's absolute value always is equal to the motion's speed because it is a scalar.

<h3>Briefing:</h3>

Given the initial velocity of the ball (u) =  0

Distance travelled by the ball (s) = 200m

Acceleration (a) = 10 m/s²

As we know:

v² = u² + 2as

Putting values:

v² = 0+2 × (10 m/s²) × (200 m)

v = 44.73 m/s.

To know more about Velocity visit:

brainly.com/question/18084516

#SPJ9

8 0
1 year ago
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