How does an accretion disk around a neutron star differ from an accretion disk around a white dwarf?
A) The accretion disk around a neutron star is much hotter and emits higher-energy radiation.
B) The accretion disk around a neutron star is made mostly of helium, while the accretion disk around a white dwarf is made mostly of hydrogen.
C) The accretion disk around a neutron star is more likely to give birth to planets.
D) The accretion disk around a neutron star always contains much more mass.
A) The accretion disk around a neutron star is much hotter and emits higher-energy radiation.
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Suppose you are throwing two dice in a friendly game of craps. For any given
throw, the two numbers that are face up can have a sum of 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12. Which outcome is least probable?
1.2 2.2 and 12 3.7 4.6 and 10 5.11Suppose you have a spool of thread that can rotate around a fixed axis as you pull thread off it. If you pull the thread with your hand so that the thread always lies along a certain fixed line, how will your hand’s speed as it moves compare to 
, where R is the spool’s radius and 
is angular speed?
A. The hand’s speed will be greater than 
.
B. The hand’s speed will be less than .
C. The hand’s speed will be equal to .
D. The hand’s speed has nothing to do with .
Radio waves, visible light, and X-rays are all types of electromagnetic radiation
Indicate whether the statement is true or false
________ looked very bland in Voyager 2 photos in 1986, but as equinox approached in the 1990s, its disk showed belts, zones, and storms
Fill in the blank(s) with correct word