Which of the following statements about degeneracy pressure is not true?
A) Degeneracy pressure can continue to support an object against gravitational collapse even if the object becomes extremely cold.
B) Degeneracy pressure arises from a quantum mechanical effect that we don't notice in our daily lives.
C) Black holes form when gravity overcomes neutron degeneracy pressure.
D) Degeneracy pressure can arise only from interactions among electrons.
D) Degeneracy pressure can arise only from interactions among electrons.
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A filtergram is a photograph of the sun's surface made
a. in a band of wavelengths in the infrared. b. in a band of wavelengths in the ultraviolet. c. using the Zeeman effect. d. with only those photons emitted in a specific spectral line. e. none of the above
When two or more capacitors are connected in series across a potential difference
A) the equivalent capacitance of the combination is less than the capacitance of any of the capacitors. B) the potential difference across the combination is the algebraic sum of the potential differences across the individual capacitors. C) each capacitor carries the same amount of charge. D) All of the above choices are correct. E) None of the above choices are correct.
A coil is wrapped with 300 turns of wire on the perimeter of a square frame (side length = 20 cm). Each turn has the same area as the frame, and the total resistance of the coil is 1.5 W. A uniform magnetic field perpendicular to the plane of the coil changes in magnitude at a constant rate from 0.50 T to 0.90 T in 2.0 s. What is the magnitude of the induced emf in the coil while the field is
changing? a. 2.4 V b. 1.6 V c. 3.2 V d. 4.0 V e. 8.4 V
A 60.0 cm long brass rod is suspended at the ends by long strings. The rod is struck at one end parallel to the rod and causes the rod to vibrate longitudinally with the ends free. 
The frequency of the vibration is
A. 3,790 Hz. B. 3,540 Hz. C. 3,120 Hz. D. 2,720 Hz. E. 2,140 Hz.