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Questions and Answers
Which of the following best defines measurement in physics?
Which of the following best defines measurement in physics?
- A quantity that has both a number and a unit. (correct)
- Observation and measurement of the physical world.
- The act of comparing a physical quantity to a unit.
- The ratio of a physical quantity to the unit.
What is the difference between precision and accuracy?
What is the difference between precision and accuracy?
- Precision refers to the closeness of a measurement to the true value, while accuracy refers to the closeness of a set of measurements to each other.
- Precision refers to the closeness of a set of measurements to each other, while accuracy refers to the closeness of a measurement to the true value. (correct)
- Precision and accuracy are not important in physics.
- Precision and accuracy are the same thing.
What is the formula for determining the number of significant figures in a given measurement?
What is the formula for determining the number of significant figures in a given measurement?
- Count the number of digits from the first non-zero digit to the last digit. (correct)
- Count the number of zeros after the decimal point.
- Count the number of zeros before the decimal point.
- Count the total number of digits in the measurement.
Which of the following best describes the concept of fundamental quantities in physics?
Which of the following best describes the concept of fundamental quantities in physics?
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What is the purpose of converting units in physics?
What is the purpose of converting units in physics?
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