Chapter 1 Section 2: Introduction
8 Questions
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Questions and Answers
- 1.
- A.
(a) Yes. (b) No
- B.
(a) Yes. (b) Yes
- C.
(a) No (b) Yes
- D.
(a) No. (b) No
- 2.You can always add two numbers that have the same units (such as 6 meters + 3 meters). Can you always add two numbers that have the same dimensions, such as two numbers that have the dimensions of length [L]?
- A.
True
- B.
False
- 3.
- A.
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- B.
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- C.
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- D.
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- E.
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- F.
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- 4.
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In the equation you wish to determine the integer value (1, 2, etc.) of the exponent n. The dimensions of y, a, and t are known. it is also known that c has no dimensions. Can dimensional analysis be used to determine n?- A.
Yes
- B.
No
- 5.Which of the following statements, if any, involves a vector?
- A.
I walked 2 miles along the beach.
- B.
I walked 2 miles due north along the beach.
- C.
I jumped off a cliff and hit the water traveling at 17 miles per hour.
- D.
I jumped off a cliff and hit the water traveling straight down at a speed of 17 miles per hour.
- E.
My bank account shows a negative balance of -25 dollars.
- 6.Two vectors are added together to give a resultant vector. The magnitudes are 3 m and 8 m, respectively, but the vectors can have any orientation. What are (a) the maximum possible value and (b) the minimum possible value for the magnitude of?
- A.
(a) 11 m
- B.
(a) 15 m
- C.
(b) 5 m
- D.
(b) 3 m
- 7.Can two nonzero perpendicular vectors be added together so their sum is zero?
- A.
Yes
- B.
No
- 8.Can three or more vectors with unequal magnitudes be added together so their sum is zero?
- A.
Yes
- B.
No
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