For stars on the main sequence, the luminosity can be estimated by the formula L = ____________________
Fill in the blank(s) with correct word
M3.5
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Synchrotron radiation occurs when high speed electrons move through a magnetic field
Indicate whether the statement is true or false
A square loop (L = 0.20 m) consists of 50 closely wrapped turns, each carrying a current of 0.50 A. The loop is oriented as shown in a uniform magnetic field of 0.40 T directed in the positive y direction. What is the magnitude of the torque on the loop?
a.
0.21 N ? m
b.
0.20 N ? m
c.
0.35 N ? m
d.
0.12 N ? m
e.
1.73 N ? m
Which object has aged the most since it emitted the light we see today?
A) the Sun B) Pluto C) a star near the center of the Milky Way D) a star in the Andromeda Galaxy
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Answer the following statement true (T) or false (F)