Practice 7.1

If the peak wavelength of a star at rest is 350 mm, but astronomers on earth observer that is has been shifted by 2.25 nm. Then how fast (in m/s) is the star moving relative to the earth?

1928571

If the peak wavelength of a star at rest is 660 nm, but astronomers on earth observer that is has been shifted by 0.001 nm. Then how fast (in m/s) is the star moving relative to the earth?

454

How many millimeters will a 17 mm wavelength radiowave be shifted if the source is traveling away from the observer at 12,000,000 m/s?

0.68

If the peak wavelength of a star at rest is 550 nm, then what peak wavelength is observed when the star is traveling 150,000 m/s away from the Earth.

550.275

If the peak wavelength of a star at rest is 725 nm, then what peak wavelength (in nm) is observed when the star is traveling 800,000 m/s toward the Earth.

723.067