Small ____________ can confine sections of Saturn's rings to produce sharp edges or narrow ringlets
Fill in the blank(s) with correct word
shepherd satellites
or
moons
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What is the fate of an open universe?
a. Expansion forever b. Eventual collapse c. Gradual halt to the expansion d. Can't be known without density information.
Which of the following lists the ingredients of the solar nebula from highest to lowest percentage of mass of the nebula?
A) light gases (H, He), hydrogen compounds (H2O, CH4, NH3), metals, rocks B) hydrogen compounds (H2O, CH4, NH3), rocks, metals, light gases (H, He) C) light gases (H, He), hydrogen compounds (H2O, CH4, NH3), rocks, metals D) hydrogen compounds (H2O, CH4, NH3), light gases (H, He), rocks, metals E) hydrogen compounds (H2O, CH4, NH3), light gases (H, He), metals, rocks
A metal bar is used to conduct heat. When the temperature at one end is 82.0°C and at the other is 37.0°C, heat is transferred at a rate of 9 J/s. If the temperature of the hotter end is reduced to 55.7°C, what will be the rate of heat transfer?
a. 2.7 J/s b. 1.6 J/s c. 6.2 J/s d. 3.7 J/s e. 5.0 J/s
If an electric charge is rapidly shaken up and down,
A) sound is emitted. B) light is emitted. C) electron excitation occurs. D) an electromagnetic wave is produced.