Falling objects [dropped near the earth's surface, neglecting air resistance] all fall at
A) an acceleration that is larger for more massive objects.
B) the same constant [or unchanging] acceleration.
C) zero acceleration.
D) the same constant [or unchanging] velocity.
E) the same constant (or unchanging) speed.
B
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If there is a full moon visible from Paris one evening, twelve hours later in Australia there will be a ________ visible.
A. full moon B. first quarter moon C. crescent moon D. new moon
A pure sample of 226Ra contains 1.5 × 10^13 atoms of the isotope. If the half-life of 226Ra = 1.6 × 10^3 years, what is the decay rate of this sample? (1 Ci = 3.7 × 10^10 decays/s)
a. 8.0E–9 Ci b. 2.1E+2 Ci c. 5.6E–9 Ci d. 1.8E–1 Ci e. 2.5E–1 Ci
Linear momentum __________ conserved
Fill in the blank(s) with correct word
Heat is extracted from a hot reservoir during a(n) ________ expansion in a Carnot cycle.
Fill in the blank(s) with the appropriate word(s).