Telephone calls travel through optical fibers at the speed of light, which is 186,000 miles per second. A millisecond is 0.001 of a second. How far can your voice travel over an optical line in 1 millisecond?
The speed of light in optical fiber is actually closer to 120,000 miles per second. It travels more slowly in glass than in air or vacuum.
The first sentence in your question is in error. The method of solution remains the same as jai's answer.
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To calculate how far your voice can travel over an optical line in 1 millisecond, we can use the formula:
Distance = Speed × Time
Given that the speed of light is 186,000 miles per second and that 1 millisecond is 0.001 seconds, we can substitute these values into the formula:
Distance = 186,000 miles per second × 0.001 seconds
Now, let's calculate the distance:
Distance = 186,000 miles/second × 0.001 seconds
= 186 miles
Therefore, your voice can travel approximately 186 miles over an optical line in 1 millisecond.