A boulder is dropped onto mud and plows into it a certain distance. If it hits with three times as much speed, the distance it plows into the mud will likely be
A) the same distance.
B) twice as deep.
C) three times as deep.
D) more than three times as deep.
Answer: D
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Nonmagnetic metals in municipal waste are separated with ___________.
Fill in the blank(s) with the appropriate word(s).
Where does the asteroid belt lie?
a. between Mars and Jupiter b. between Uranus and Neptune c. between Neptune and Pluto d. beyond Neptune e. well beyond the orbits of the planets
A proton moving at 3 × 10^4 m/s is projected at an angle of 30° above a horizontal plane. If an electric field of 400 N/C is directed downwards, how long does it take the proton to return to the horizontal plane? (HINT: Ignore gravity.) [mProton = 1.67 × 10^-27 kg, qProton = +1.6 × 10^-19 C.]
A(n) ____ is well supported (observationally and/or experimentally) system of rules and principles that can be applied to a wide variety of circumstances but that is not universally accepted
a. hypothesis b. paradigm c. theory d. model