Question on the speed of light.

AI Thread Summary
An observer sees a lightning flash and hears the thunder 12 seconds later, prompting a calculation of the distance from the storm. The speed of sound in air, which varies with temperature, is crucial for determining this distance. At 20 degrees Celsius, the speed of sound is approximately 343 meters per second. Multiplying this speed by the time interval of 12 seconds gives a distance of about 4,116 meters. Resources like HyperPhysics are recommended for further understanding of sound speed calculations.
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Homework Statement


An observer sees a lightning flash from a distant thunderstorm and 12 seconds later hears the second. If the temperature of the air is 20 degress celsius, how far from the storm is the observer? (assume that light travels instantaneously.




Homework Equations


None I know of.


The Attempt at a Solution



No clue. I've missed 4 days of school last week due to some sort of rash that was said to be contagious. I am very exhausted and I have no clue what I have to do. Can someone please do the problem and guide me by explaining how they solved it?

Thanks.
 
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did some math and got 4083 meters.
 
so it is 4,123?
 
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