A triatomic molecule is modeled as follows: mass m is at the origin, mass 2m is at x = a, and mass 3m is at x = 2a
(a) What is the amount of inertia about the origin?
(b) What is the moment of inertia about the center of mass?
(a) 14 ma2
(b) 3.3 ma2
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Magnesium alloys have low ductility because of their _________close-packed crystal structure.
Fill in the blank(s) with the appropriate word(s).
Which element represented most of the atoms in the early Universe?
a. helium b. hydrogen c. oxygen d. carbon e. nitrogen
If the polar ice decreases, what would happen, and why?
A) cooling, because melted ice cools things off B) warming, because more sunlight is reflected C) cooling, because more sunlight is reflected D) warming, because more sunlight is absorbed
When the Moon appears on an observer's meridian at midnight, it is called a(n) ______________ moon
Fill in the blank(s) with correct word