A ball is thrown straight up with a speed of 30 m/s, and you can neglect the presence of air. (a) How long does it take the ball to reach the maximum height? (b) What is the maximum height reached by the ball? (c) What is its speed after 4.2 s?
What will be an ideal response?
(a) 3.1 s (b) 46 m (c) 11 m/s
Physics & Space Science
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What is left when a planetary nebula dissipates?
A. a neutron star B. a black hole C. a red giant D. a white dwarf
Physics & Space Science
The Chandrasekhar Limit is:
A) the upper mass limit for a white dwarf. B) the temperature at which hydrogen fusion starts. C) the temperature at which helium fusion starts. D) the point at which a planetary nebula forms. E) the lower mass limit for a Type II supernova.
Physics & Space Science
Felsic characteristics
What will be an ideal response?
Physics & Space Science
If the masses of two planets doubles and the distance between them also doubles, the force between them would be
A) one-quarter. B) half as much. C) twice as much. D) four times as much. E) none of the above
Physics & Space Science