A cube has a side of 1.2 x 10^-2m. Its volume will be recorded as:
Correct answer: C. 1.7 x 10^-6 m3
- A. 1.728 x 10^-6 m3
- B. 1.72 x 10^-6 m3
- C. 1.7 x 10^-6 m3
- D. 0.72 x 10^-6 m3
Explanation
The following is the solution: Volume=l3=1.728x10-6m3 The length has two significant figures, hence v = 1.7x10-6 m3
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About Measurements
Physical quantities are expressed with SI base and derived units, while measurement limits are described through accuracy, precision, absolute and percentage error, and significant figures. Dimensional analysis checks equations, derives relationships and detects inconsistent units, but it cannot determine numerical constants or distinguish quantities with identical dimensions.
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