In hydrogen, the transition from level 2 to level 1 has a rest wavelength of 121.6 nm.1).Find the speed for a star in which this line appears at wavelength 120.4 nm .2).Find the direction for a star in which this line appears at wavelength 120.4 nm .toward us or away from us?3).Find the speed for a star in which this line appears at wavelength 121.4 nm .4).Find the direction for a star in which this line appears at wavelength 121.4 nm .toward us or away from us?5).Find the speed for a star in which this line appears at wavelength 122.2 nm .6).Find the direction for a star in which this line appears at wavelength 122.2 nmtoward us or away from us?7).Find the speed for a star in which this line appears at wavelength 122.9 nm .8.Find the direction for a star in which this line appears at wavelength 122.9 nm .toward us or away from us?
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Physics, 22.06.2019 10:30, janeou17xn
Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.
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The built in flash in a compact camera is usally capable of giving correct exsposure for distance up to how many meters?
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You are driving to the grocery store at 20 m/s. you are 110m from an intersection when the traffic light turns red. assume that your reaction time is 0.50s and that your car brakes with constant acceleration. how far are you from the intersection when you begin to apply the brakes? what acceleration will bring you to rest right at the intersection? how long does it take you to stop after the light changes? the known values: vi=20m/s xi=110m t=.50s vf=0m/s xf=0m a=?
Answers: 3
In hydrogen, the transition from level 2 to level 1 has a rest wavelength of 121.6 nm.1).Find the sp...
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