1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Deffense [45]
3 years ago
15

On the Moon's surface, lunar astronauts placed a corner reflector, off which a laser beam is periodically reflected. The distanc

e to the Moon is calculated from the round-trip time. The Earth's atmosphere slows down light. Assume the distance to the Moon is precisely 3.84×10^8 m, and Earth's atmosphere (which varies in density with altitude) is equivalent to a layer 40.0 km thick with a constant index of refraction n=1.000293. What is the difference in travel time for light that travels only through space to the moon and back and light that travels through the atmosphere and space?
Physics
1 answer:
Arisa [49]3 years ago
4 0

Answer:

Explanation:

The difference in time will be due to travel through atmosphere where speed of light slows down. If t be the thickness of atmosphere and c be the speed of light in space and μ be the refractive index of atmosphere difference in travel time will be as follows .

difference = \frac{2t\mu }{c}-\frac{2t }{c}

=\frac{2t}{c }\left ( 1-\mu  \right )

Now t = 40 x 10³m ,μ = 1.000293 , c = 3 x 10⁸.

difference =\frac{2t\mu }{c}-\frac{2t }{c}

=\frac{2t}{c }\left ( \mu -1  \right )\\

=\frac{ 2\times 40\times 10^3}{3\times10^3 }\left ( 1.000293-1 \right )\\

=7.81\times 10^{-3} s

You might be interested in
Weight, height, and temperature are all types of _____.
katovenus [111]
Weight, hight, and temperature are all typws of measurements.
6 0
3 years ago
Plz answer #2 plz this is 8th grade science / physics
MrRissso [65]
All you need is your science book
5 0
3 years ago
there are 3 balls , ball 1 has a mass of 2 kg ,ball number 2 has a mass of 0.5 kg, and ball number 3 has the mass of 0.02 kg ...
viva [34]

Answer:

yes

Explanation:

7 0
2 years ago
Where is the deepest cave in the world? How far down is it located?
Sergeeva-Olga [200]

Answer:

Geology Notes

1 Veryovkina Cave 2212[1] 13.5 km (8.4 mi)[1] Abkhazia / Georgia 43°23′52″N 40°21′37″E.

6 0
3 years ago
ln the constellation of Orion, you can see a group of stars and other objects that appear in the shape of a sword. Ln the middle
bagirrra123 [75]

Answer:

Nebula

Explanation:

 Given that in the constellation of Orion, you can see a group of stars and other objects that appear in the shape of a sword. Ln the middle of the sword, a bright "fuzzy star" appears. Astronomers looking at this object through telescopes refer to it as a "stellar nursery." Another name for this object is called NEBULA.

The space where new stars are forming anew is known as nebulae

7 0
3 years ago
Other questions:
  • A car of mass 1800 kg collides with a truck of mass 5200 kg, and just after the collision the car and truck slide along, stuck t
    7·1 answer
  • A visible light emits light with a wavelength of 4.00x10^-7m.
    7·1 answer
  • What is the magnitude of the electric force between two point charges with Q1 = -1.5 C and Q2 = 0.8 C at a distance of 1 km?
    14·1 answer
  • The width of a particular microwave oven is exactly right to support a standing-wave mode. Measurements of the temperature acros
    9·1 answer
  • Choose the answer that best completes this sentence: The moon may have contributed to the evolution of life from _____.
    6·1 answer
  • The clean water act___
    9·1 answer
  • Two physical pendulums (not simple pendulums) are made from meter sticks that are suspended from the ceiling at one end. The sti
    7·1 answer
  • A man jogs at a velocity of 2.5 m/s west for 1,200 s. He then walks at a velocity 1.0 m/s east for 500 s and then stops to rest
    12·1 answer
  • The average velocity of a tennis ball is measured during serving and found to be 216 km/hr.
    9·1 answer
  • Identify the scale of measurement used.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!