What space shuttle put the hubble into orbit?
What will be an ideal response?
Discover space shuttle
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Compton Scattering: In a Compton scattering experiment using x-rays, the wavelength of the x-rays increases by 5.0% as the light is scattered at an angle of 60° with its original direction. What was the original wavelength of the light before scattering? (melectron = 9.11 × 10-31 kg, c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s)
Fill in the blank(s) with the appropriate word(s).
To be dimensionally consistent, distance [L], acceleration and time [T] must be related as follows.
A.
B.
C.
D.
In ________ stars most of the electrons in the hydrogen atom are above level 2 and in ________ stars most of the electrons are below level 2, therefore the ________ are essentially absent in both types.
A. type O; type A; emission lines B. type M; type A; absorption lines C. type A; type M; emission lines D. type M; type O; Balmer lines E. type O; type M; Balmer lines
In a vacuum, the relative permeability is
A) zero. B) 4? × 10-7 T/A-m. C) 1.0. D) infinite. E) 8.99 × 109.