When SI units are plugged into an equation, it is found that the units balance. Which of the following can we expect to be true for this equation?

Select one:

a.

The equation will not be dimensionally correct.

b.

The equation will be dimensionally correct except sometimes in cases when the right-hand side of the equation has more than one term.

c.

The equation will be dimensionally correct.

d.

All constants of proportionality will be correct.

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If the eastward component of vectorA

Ais equal to the westward component of vectorB

Band their northward components are equal. Which one of the following statements about these two vectors is correct?

Select one:

a.

The magnitude of vectorA

Ais equal to the magnitude of vectorB

B.

b.

VectorA

Ais parallel to vectorB

B.

c.

VectorA

Ais perpendicular to vectorB

B.

d.

VectorsA

AandB

Bpoint in opposite directions.

e.

The magnitude of vectorA

Ais twice the magnitude of vectorB

B.

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A certain CD-ROM disk can store approximately6.010

2

6.0102megabytes of information, where10

6

106bytes = 1 megabyte. If an average word requires 9.0 bytes of storage, how many words can be stored on one disk?

Select one:

a.

2.110

7

2.1107words

b.

6.710

7

6.7107words

c.

5.410

9

5.4109words

d.

2.010

9

2.0109words