Textbook Question
An angstrom (symbol Å) is a unit of length, defined as 10-10, which is on the order of the diameter of an atom. How many nanometers are in 1.0 angstrom?
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1. Intro to Physics Units
Unit Conversions
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What is the speed of light in feet per nanosecond?
A
1.5 ft/ns
B
0.9836 ft/ns
C
0.5 ft/ns
D
2.0 ft/ns
Verified step by step guidance1
Understand that the speed of light in a vacuum is approximately 299,792,458 meters per second. We need to convert this speed into feet per nanosecond.
First, convert meters to feet. Use the conversion factor: 1 meter = 3.28084 feet. Multiply the speed of light in meters per second by this factor to get the speed in feet per second.
Next, convert seconds to nanoseconds. Since 1 second = 1,000,000,000 nanoseconds, divide the speed in feet per second by 1,000,000,000 to get the speed in feet per nanosecond.
Combine these conversions to find the speed of light in feet per nanosecond: \( \text{Speed in ft/ns} = \frac{299,792,458 \times 3.28084}{1,000,000,000} \).
Evaluate the expression to find the numerical value of the speed of light in feet per nanosecond.
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