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Category > Physics Posted 23 May 2017 My Price 7.00

A student is walking down a hallway

1) A student is walking down a hallway when she yells hello from outside an open classroom door.
Explain how reflection and diffraction can be used to explain why everyone inside the room can
hear her voice. 2) A spectroscope breaks electromagnetic radiation up into its constituent parts. This can be
accomplished with refraction and with diffraction. Explain how astronomers can use the
spectrum to determine the temperature of the object that produced the electromagnetic
radiation. 3) Astronomers compared the spectra from two different stars in our galaxy. It was noted that the
Doppler shift suggested that the two stars are moving relative to us with the same speed. It was
also noted that the stars moved relative to us with different velocities. Explain how this can be
true. 4) Why is the red line of the distant galaxy’s spectrum missing, and what might that mean about
the galaxy? 5) Astronomers observe a supernova remnant and a planetary nebula with a spectroscope. In
terms of velocity, compare the Doppler shifts observed with each of these objects. Justify your
answer.

Answers

SuperTutor
(15)
Status NEW Posted 23 May 2017 05:05 AM My Price 7.00

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