?Instructions: On occasion, the notation 
will be a shorthand notation for 
.
If vector 
is added to vector 
, the result is a third vector that is perpendicular to and has a magnitude equal to 3. What is the ratio of the magnitude of to that of ?
A. 1.8
B. 2.2
C. 3.2
D. 1.3
E. 1.6
Answer: C
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The length and width of a standard sheet of paper is measured, and then the area is found by calculation to be 91.50 in2. The number of significant figures in the width measurement must be at least:
a. 5 b. 6 c. 8 d. 4
A particle (m = 50 g, q = 5.0 ?C) is released from rest when it is 50 cm from a second particle (Q = ?20 ?C). Determine the magnitude of the initial acceleration of the 50-g particle.
A. 54 m/s2 B. 90 m/s2 C. 72 m/s2 D. 65 m/s2 E. 36 m/s2
What is the approximate volume of an adult human’s head.
A. 0.1 
B. 0.001
C. 0.005
D. 0.01
E. 0.05
Almost all the stars we see around us with the naked eye are relatively ________ in age
Fill in the blank(s) with correct word