Twenty kilometers is
A) 200,000 m.
B) 20,000 m.
C) 2,000 m.
D) 200 m.
E) 0.02 m.
Correct Answer:
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Q43: Fifteen microseconds is
A)0.0000015 s.
B)0.000015 s.
C)0.00015 s.
D)0.015 s.
E)15000000
Q44: A racecar driver steps on the gas,changing
Q45: Two microcuries is
A)200,000 Ci.
B)0.0002 Ci.
C)0.00002 Ci.
D)0.000002 Ci.
E)0.00000002
Q46: When a body moves in circular motion
Q47: Twenty milliseconds is
A)0.00002 s.
B)0.0002 s.
C)0.002 s.
D)0.02 s.
E)20000
Q49: A racecar goes around a 200 m
Q50: In expressions like Δv and Δt,Δ stands
Q51: The acceleration after starting from rest is
Q52: Which metric prefix means one thousand?
A)milli-
B)centi-
C)one-
D)kilo-
E)mega-
Q53: A racecar driver steps on the gas,and
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