The mass of a galaxy's central black hole is proportional to the mass of its _______________
Fill in the blank(s) with correct word
bulge
central bulge
galactic bulge
nuclear bulge
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Which of these, all of the same length, has the greater electrical resistance?
A) a copper rod B) an iron rod C) a rubber rod D) all about the same E) none of the above
A spaceship is 25 m wide and 100 m long. When traveling at 0.80 c (in a direction along its length), what is its observed width?
A. 42 m B. 25 m C. 16 m D. 15 m E. 20 m
How can tidal forces affect the rotation of celestial bodies and their orbital motion? Hint: Consider Earth and the Moon
What will be an ideal response?
The velocity and acceleration of an object
1.must have the same sign. 2.can have opposite signs. 3.must both be zero simultaneously; one cannot be zero and the other nonzero. 4.must have opposite signs.