The magnitude of a vector can never be less than the magnitude of any of its components
A) True
B) False
A
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The vertical axis (Y-axis) of the Hertzsprung-Russell Diagram is labeled with _______________
Fill in the blank(s) with correct word
A solar mass star will evolve off the main sequence when
A) it completely runs out of hydrogen. B) it expels a planetary nebula to cool off and release radiation. C) it explodes as a violent nova. D) it builds up a core of inert helium. E) it loses all its neutrinos, so fusion must cease.
A solid disk and a hollow disk with the same mass and diameter are released together (from rest) to roll down an incline. The solid disk reaches the bottom first. From this information we can say that the angular acceleration was
A. the same for both disks. B. larger for the hollow disk. C. larger for the solid disk. D. impossible to know without a measurement of time.
A uniform rod of length L and mass M is pivoted about one end. Attached to the rod is a mass M at its midpoint and at the end opposite the pivot is another mass M. What is the moment of inertia of this configuration about the pivot?
a. 3ML2 b. 7ML2/12 c. 4ML2/3 d. 19ML2/12