1. Intro to Physics Units
Introduction to Units
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Practice this topic
- Multiple Choice
The earth's circumference is approximately 40.1 Mm (megameters). What is this circumference in kilometers?
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Astronomers often detect radio waves with wavelengths of 3,000,000,000 nm. What is this wavelength expressed in decameters (dam)?
342views3rank - Multiple Choice
Rewrite 0.00016 kg in scientific notation.
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Rewrite 299,800,000 m/s in scientific notation.
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The position of an object is given by 𝓍 = At + Bt², where 𝓍 is in meters and t is in seconds. What are the units of A and B?
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Write the following numbers in powers of 10 notation: 0.219.
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Write out the following numbers in full with the correct number of zeros: 2.5 x 10⁻¹
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Time intervals measured with a physical stopwatch typically have an uncertainty of about 0.2 s, due to human reaction time at the start and stop moments. What is the percent uncertainty of a hand-timed measurement of 4.5 min?
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