The Hubble law is a relation between a galaxy's
a. mass and its luminosity.
b. distance and its luminosity.
c. mass and its recession velocity.
d. distance and its recession velocity.
e. mass and its diameter.
d
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A positive magnetic susceptibility is due to an applied magnetic field orienting electron _________in the direction of the applied magnetic field.
Fill in the blank(s) with the appropriate word(s).
Superposition of waves can produce
A) reinforcement. B) cancellation. C) partial cancellation. D) all the above
The N14 nucleus consists of
A. 21 protons and 7 electrons. B. 7 protons and 7 neutrons. C. 14 protons. D. 14 neutrons.
A force on an object is given by F(x) = (2.00 N/m)x + (-3.00 N/m3)x3. What is a potential energy function for this conservative force?
A) 2.00 N/m - 9.00x2 B) (-2.00 N/m)x2 + (3.00 N/m3)x4 C) -2.00 N/m + (-3.00 N/m3)x2 D) (-1.00 N/m)x2 + (0.750 N/m3)x4 E) -2.00 N/m + 9.00x2