When stars are moving away from us the color of their light is shifted toward the ______ (red or blue) end of the light spectrum because the wavelegth is ________ (shorter or longer).

a. red; longer
b. red; shorter
c. blue; longer
d. blue; shorter


a. red; longer (When stars are moving away from us the color of their light is shifted toward the red end of the light spectrum because the wavelength is longer.)

Physics & Space Science

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Assume the woman in the figure uses her prism to look at a spectrum of light coming from the object(s) shown. In which case will she see a continuous rainbow of thermal radiation?

A) Case 1 B) Case 2 C) Case 3 D) Case 4

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An alpha particle (charge = +2e) is sent at high speed toward a gold nucleus (charge +79e). What is the electrical force acting on the alpha particle when it is at a distance of 2 × 10?14 m away from the gold nucleus? (e = 1.6 × 10?19 C)

What will be an ideal response?

Physics & Space Science

A particle of charge +2q is placed at the origin and particle of charge -q is placed on the x-axis at x = 2a. Where on the x-axis can a third positive charge be placed so that the net electric force on it is zero?

A) 3.4a B) 6.8a C) 8.6a D) 9.3a E) 1.0a

Physics & Space Science

Contrast a hypernova and a type II supernova

What will be an ideal response?

Physics & Space Science