What is the significance of 8 solar masses in stellar evolution?
What will be an ideal response?
Above 8 solar masses, a high mass star must go through a violent type II supernova core collapse, producing a neutron star or even a black hole for the most massive stars. Below that limit, a low mass star will shed enough mass in its giant and planetary nebula stages to avoid the core collapse, and eventually settle down into a white dwarf.
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A torque of 2.00 N•m is applied to a 10.0 kg object to give it an angular acceleration. If the angular acceleration is 1.75 
then the moment of inertia is
A. 1.95 kg 
B. 1.05
C. 1.14
D. 1.20
E. 1.35
A uniform cylinder of radius R, mass M, and length L rotates freely about a horizontal axis parallel and tangent to the cylinder, as shown below. The rotational inertia of the cylinder about this axis is
?
?
A.
.B.
.C.
D.
.E.
.The next moon likely to be broken up into a ring is
A) Triton. B) Mimas. C) Io. D) Ganymede. E) Charon.
A 1.5-m string is held fixed at both ends. When driven by a 180-Hz source, the string vibrates in 3 distinct segments. What is the natural fundamental frequency of the string?
a. 30 Hz c. 90 Hz b. 60 Hz d. 540 Hz