A star on the ____________________ generates enough energy from nuclear fusion to halt gravitational collapse
Fill in the blank(s) with correct word
main-sequence
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What common gas assumes an uncommon state in the mantles of Jupiter and Saturn? Why?
What will be an ideal response?
Although astronomers refer to the Galaxy's disk as rotating, the motion is really due to the ________ motion of each of the objects in the disk
Fill in the blank(s) with correct word
A star is observed with a surface temperature of 3,000 K and a luminosity of 10?2 solar. What is the approximate mass of this star?
A) 0.5 Msun B) 0.9 Msun C) 0.2 Msun D) The mass cannot be determined.
A 385-g tile hangs from one end of a string that goes over a pulley with a moment of inertia of and a radius of 15.0 cm. A mass of 710 g hangs from the other end of the string. When the tiles are released, the larger one accelerates downward while the lighter one accelerates upward. The pulley has no friction in its axle and turns without the string slipping. What is the tension in the string on the side of the 710-g tile?
A) 9.77 N B) 6.87 N C) 5.59 N D) 4.41 N E) 3.68 N