Degenerate matter has two peculiar properties that can affect a star. One is that the degenerate gas resists compression, and the other is that the degenerate gas ____
a. is not density dependent
b. does depend on temperature
c. does not depend on temperature
d. is not pressure dependent.
e. does depend on the type of nuclei present
c
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A concave mirror has a focal length of 20 cm. What is the position (in cm) of the resulting image if the image is inverted and four times smaller than the object?
a. 15 b. 25 c. 50 d. 100 e. -15
A conducting bar of length L rotates with a constant angular speed of +2.0 rad/s about a pivot P at one end, as shown. A uniform magnetic field (magnitude = 0.20 T) is directed into the paper. If L = 0.40 m, what is the potential difference, VA ? VP?
a.
?12 mV
b.
+8.0 mV
c.
?8.0 mV
d.
+12 mV
e.
?16 mV
You drop a stone down a well. You hear the splash 2.23 s later. How deep is the well? The speed of sound in air is 343 m/s
A) 6.96 m B) 20.2 m C) 22.9 m D) 18.8 m E) 20.0 m
Kinetic Energy: Which one has larger kinetic energy: a 500-kg object moving at 40 m/s or a 1000-kg object moving at 20 m/s?
A. The 500-kg object B. The 1000-kg object C. Both have the same kinetic energy.