A 10-N block and a 1-N block lie on a horizontal frictionless table. To impart equal horizontal accelerations, we would have to push the heavier block with
A) an equal force.
B) 10 times as much force.
C) 10 squared or 100 times as much force.
D) 1/10 as much force.
E) none of the above
Answer: B
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The most abundant component of the atmospheres of Uranus and Neptune is:
A) Hydrogen. B) Helium. C) Methane. D) Ammonia. E) Nitrogen.
The composition of the early atmosphere of the Earth was dominated by
A) hydrogen (H2) B) nitrogen (N2) C) carbon dioxide (CO2) D) oxygen (O2)
Instructions: On occasion, the notation 
will be a shorthand notation for 
.
When vector 
is added to vector 
, which has a magnitude of 5.0, the vector representing their sum is perpendicular to and has a magnitude that is twice that of . What is the magnitude of ?
A. 2.2
B. 2.5
C. 4.5
D. 5.0
E. 7.0
Consider a point on a bicycle wheel as the wheel makes exactly four complete revolutions about a fixed axis. Compare the linear and angular displacements of the point
a. Both are zero. c. Only the linear displacement is zero. b. Only the angular displacement is zero. d. Neither is zero.