The force due to gravity between two objects can be described using the equation Fg = G M1 M2 / d2. In this equation, what does M1 represent?
A) the mass of one of the objects
B) the diameter, in meters, of one of the objects
C) the distance, in meters, between the two objects
A
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Synchrotron radiation is produced by
a. objects with temperature below 10,000 K. b. high-velocity electrons moving through a magnetic field. c. cold hydrogen atoms in space. d. the collapsing cores of massive stars. e. helium flash.
Once an alpha particle is outside the nucleus it is
A) free to wander about the surrounding material. B) quickly bound to a neighboring nucleus. C) electrostatically repelled. D) radioactive.
The birth place of stars: Discuss the observational evidence that supports the idea that most stars are formed in groups from large clouds of interstellar gas and dust
What will be an ideal response?
Would you be richer if you had a hunk of gold whose weight is 1 newton on the moon, or one whose weight is 1 newton on Earth, and why?
A) 1 newton on the moon, because then the gold's weight on the moon would be larger. B) 1 newton on the moon, because then the gold's mass would be larger. C) 1 newton on Earth, because then the gold's mass would be larger. D) 1 newton on Earth, because then the gold's weight on Earth would be larger. E) It wouldn't make any difference, because the amount of actual gold would be the same in both cases.