In what region of the solar system is Pluto found?
A) the asteroid belt
B) the Kuiper belt
C) the Oort cloud
D) the terrestrial planet region
B) the Kuiper belt
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A spear is thrown at you at a very high speed. As it passes, you measure its length as one-half its normal length. From this measurement, you conclude that the moving spear's mass must be
A) one-half its rest mass. B) twice its rest mass. C) four times its rest mass. D) zero.
An astronaut on a spaceship moving at 0.927c says that the trip between two stationary stars took 7.49 y. How long does this journey take as measured by someone at rest relative to the two stars?
A) 20.0 y B) 2.81 y C) 4.05 y D) 22.1 y
Characteristic peaks occur in an x-ray spectrum of an atom because electrons in the atom make transitions to lower energy levels after being bombarded with high energy electrons
a. True b. False Indicate whether the statement is true or false
When potassium and sulfur react to form potassium sulfide, an ionic compound,
a. each sulfur atom loses two electrons. b. each sulfur atom loses one electron. c. each potassium atom loses one electron. d. each potassium atom loses two electrons.