On the moon's surface, lunar astronauts placed a corner reflector, off which a laser beam is periodically reflected. the distance 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?
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Physics, 21.06.2019 17:20
Write maxwell's equations and discuss the terms involved and the results of each equation in classical electrodynamics. if it is possible to write these equations in integral form, give the integral forms. find the wave equation for electromagnetic waves from the maxwell equations. what is the propagation velocity of electromagnetic waves in space according to the wave equation you find?
Answers: 3
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The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.
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Aspring has a natural length of 8 m. if a 12-n force is required to keep it stretched to a length of 10 m, how much work w is required to stretch it from 8 m to 16 m? (round your answer to two decimal places.)
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Physics, 22.06.2019 20:30
Your friend increases her force on the desk by 30n . she doesn't change the direction of her push . what happens to the net force on the desk .will the desk accelerate
Answers: 2
On the moon's surface, lunar astronauts placed a corner reflector, off which a laser beam is periodi...
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