Questions and answers by

Xenon

Questions (8)

The same telescope is used to obtain an image using light of the following wavelengths. Which of the images will have the
1. 3 answers
2. 886 views
A TV satellite broadcasts at a frequency of 5000 MHz, (1 MHz = 1 million Hertz). What is the wavelength of this radiation?a.
1. 1 answer
2. 2,582 views
A star is moving away from an observer at 1% of the speed of light. At what wavelength would the observer find an emission line
1. 2 answers
2. 1,639 views
In the laboratory, an atom emits a spectral line at a wavelength of 400 nanometers. In the spectrum of a star, the same spectral
1. 2 answers
2. 1,498 views
When used at a wavelength of 1 micron, a telescope can resolve angles as small as 0.1 seconds of arc. How small an angle could
1. 2 answers
2. 1,066 views
At what wavelength will the spectrum of a perfect black body with a temperature of 8,009 Kelvin peak, assuming that a perfect
1. 0 answers
2. 615 views
Star A has 3 times the surface temperature and 0.6 times the radius of Star B. What is the ratio of the luminosity of Star A to
1. 0 answers
2. 572 views
If a star is receding (moving away from us) at a speed of 1.8% of the speed of light, at what wavelength would a spectral line
1. 0 answers
2. 714 views

Ask a New Question