Concept explainers
To estimate:The distance from lightning flash and to count the seconds between the flash and the thunder.
Answer to Problem 71A
The distance from the lightning is 1 km away when the number of seconds between a flash and a thunder is 3 seconds, and the distance from the lightning is 1 mile away when the number of seconds between a flash and a thunder is 5 seconds.
Explanation of Solution
Introduction:
The speed of sound is
The sound moves approximately 1 km in 3 seconds, as the speed of sound is
The number of seconds between a flash and a thunder when divided by 3, the distance from the lightning is obtained in kilometers.
The number of seconds between a flash and a thunder when 3 seconds, it means the distance from the lightning is 1 km away.
For sound to travel 1 mile the time required is 5 seconds approximately.
So, if the number of seconds between a flash and a thunder isdivided by 5, the distance from the lightning is obtained in miles.
The number of seconds between a flash and a thunder is when 5 seconds, it means the distance from the lightning is 1 mile away.
Conclusion:
The distance from the lightning is 1 km away when the number of seconds between a flash and a thunder is 3 seconds, and the distance from the lightning is 1 mile away when the number of seconds between a flash and a thunder is 5 seconds.
Chapter 15 Solutions
Glencoe Physics: Principles and Problems, Student Edition
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