What happens to two neutron stars that are orbiting so close together they emit gravitational waves?
A) The neutron stars will fly apart from one another.
B) It has no effect.
C) The neutron stars will spiral together and merge.
D) The neutron stars will recombine and form a new, young star.
C
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Waves on a String: A string of mass m is under tension, and the speed of a wave in the string is v. What will be the speed of a wave in the string if the mass of the string is increased to 2m but with no change in the length or tension?
A. v/2
B. v/
C. v
D. 2v
E. 4v
When a switch is closed to complete a DC series RL circuit,
A. the electric field in the wires increases to a maximum value. B. the magnetic field outside the wires increases to a maximum value. C. the rate of change of the electric and magnetic fields is greatest at the instant when the switch is closed. D. all of the above are true. E. only (a) and (c) above are true.
Combining two sounds of equal intensity will give a sound level ___________ than the sound level due to just one of them
a. twice as loud c. 10 dB higher b. 3 dB higher d. 2 dB higher
A meter stick with a mass of 89.5 g is being supported at the 50.0 cm mark by a pivot that is 1.00 cm above the center of mass of the meter stick. The moment of inertia of the stick about that point is 0.00746 kg? m2
What is the period of oscillation of this system? A) 2.01 s B) 2.41 s C) 5.79 s D) 2.89 s E) 4.02 s