The ________ is (are) the hot gases that are the moving extension of the Sun's corona
a. spicules
b. prominences
c. flares
d. supergranules
e. solar wind
e
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The mass of a galaxy's central black hole is related to the mass of the galactic bulge. This implies that ____
a. central black holes formed when the galaxy bulges formed b. central black holes have grown during the galaxy's lifetime as the galactic bulge has grown c. galactic bulges shrink over time as mass is consumed by the central black hole d. central black holes cause the formation of galactic bulges e. black holes are only present in spiral galaxies
Simple Pendulum: A simple pendulum having a bob of mass M has a period T. If you double M but change nothing else, what would be the new period?
A. 2T
B. T
C. T
D. T/
E. T/2
How fast is a galaxy at a distance of 300 Mpc receding from us?
A: 300 km/s B: 300,000 km/s C: 240 km/s D: 21,600 km/s E: 7,200 km/s
The prediction from special relativity that the length of a moving object will be shortened in the direction of motion is called __________
Fill in the blank(s) with correct word