Measurement, Errors, Data and Unit Conversion
By Internet search, you discover that 1 in. (1″) is the same as 2.54 cm. How would you convert a man’s waist girth (circumference) from 40″ to centimetres?
Multiply 40 by 2.54
Divide 40 by 2.54
Divide 2.54 by 40
Multiply 40.1 by 2.54
Multiply 40 by 2.54
You know that 1″ is the same as 2.54 cm, so ten of them would be 10 × 2.54 = 25.4 cm. Hence 40 of them would be 40 × 2.54 = 110.6 cm.
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Given that 1 mmHg = 0.133 kPa, how can a systolic BP measurement of 120 mmHg be converted to a measurement in kPa?A. Divide 120 by 0.133
B. Multiply 120 by 0.133
C. Divide 0.133 by 120
D. Add 0.133–120
How many micrograms are there in 0.25 g?
A. 250
B. 25,000
C. 250,000
D. 25,000,000
What is meant when a person’s mass is stated as 73.6 kg? That:
A. The mass is closer to 73.6 than it is to 73.7 or 73.5.
B. The mass is closer to 73.6 than to any other value.
C. The mass is between 73.5 and 73.7.
D. The mass is 73.6 ±0.1 kg.
How many milligrams are there in 1 μg?
A. 0.001
B. 1000
C. 0.1
D. 1000 000
How many micrograms are there in 1 mg?
A. 0.001
B. 0.1
C. 100
D. 1000
What is the result of converting 650 μg to mg?
A. 0.650
B. 6.50
C. 65
D. 65,000
What is 1.25 g converted to micrograms?
A. 125
B. 1250
C. 12,500
D. 1,250,000
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