A neutron star is created when a(n) ___
a. collapsing stellar core exceeds the Schwarzschild limit
b. collapsing stellar core exceeds the Hawking limit
c. stellar core exceeds the Roche limit
d. collapsing stellar core exceeds the Chandrasekhar limit
e. stellar core ignites iron fusion
d
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The first law of thermodynamics is based
upon a) the law of conservation of energy. b) the law of conservation of inertia. c) the law of conservation of molecular velocity. d) the ideal gas laws. •
Changing the electric field will have no effect on the magnetic fields of a body
Indicate whether the statement is true or false
High mass stars are much less common than low mass stars because they
A) are born in much smaller numbers B) have much shorter lifetimes C) have much longer lifetimes D) two of these
Suppose that you were selected for a "Survivor"-type TV show. To help keep your group connected, you suggest that long vines can be tied together and used to transmit signals in cases of emergency. To get the signals to travel faster, you should
A. select lighter vines. B. increase the tension on the vines. C. hang weights from the vines at evenly spaced intervals. D. do all of the above. E. do (a) or (b) above, preferably both.