At the end of its life, what kind of pressure will support our Sun?
A) neutron degeneracy pressure
B) quark degeneracy pressure
C) electron degeneracy pressure
D) pressure from interstellar dust particles
C
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Simple Harmonic Motion: A sewing machine needle moves in simple harmonic motion with a frequency of 2.5 Hz and an amplitude of 1.27 cm.(a) How long does it take the tip of the needle to move from the highest point to the lowest point in its travel?(b) How long does it take the needle tip to travel a total distance of 11.43 cm?
What will be an ideal response?
Imagine that you feed alternating current to an inductor with high inductance and very low resistance. Suppose we slowly increase the frequency of this alternating current while keeping the amplitude ?0 of the applied emf constant. How does the amplitude i0 of the alternating current flowing in the coil change (or does it)?
A. 25,000 B. 4000 C. 2500 D. 40 E. 25 F. Some other result (specify). T. One needs more information to answer.
Fallout from nuclear weapons or from a nuclear reactor accident is due to
A) the uranium nuclei used in the fission reaction. B) the radioactive "fission products" produced during the fission reaction. C) the neutrons produced during the fission reaction. D) chickens flying overhead. E) the radioactive "fusion products" produced during the fusion reaction.
When the measured quantity 45.67 kg is divided by the measured quantity 3.42 L, the answer should have how many significant figures?
a. Three b. One c. Four d. Two