In comparison to main sequence stars, which of the neutron star properties listed is not considered extreme?
A. mass
B. density
C. magnetic field
D. spin rate
Answer: A
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Which statement about pulsars is not thought to be true?
A) All pulsars are neutron stars, but not all neutron stars are pulsars. B) Pulsars can form only in close binary systems. C) A pulsar must have a very strong magnetic field and rotate quite rapidly. D) Pulsars are kept from collapsing by neutron degeneracy pressure.
A uniform rod is 3.0 m long. The rod is pivoted about a horizontal, frictionless pin through one end. The rod is released from rest at an angle of 27° above the horizontal. What is the angular speed of the rod as it passes through the horizontal position?
a. 3.0 rad/s b. 2.8 rad/s c. 2.1 rad/s d. 2.5 rad/s e. 3.4 rad/s
A(n) _______________ occurs when the Moon moves between Earth and the Sun
Fill in the blank(s) with correct word
The equivalent (combined) resistance of 1-ohm, 2-ohm, and 3-ohm in parallel is about
A) 0.06 ohm. B) 1 ohm. C) 1.8 ohms. D) 6 ohms. E) 9 ohms.