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Question
Nita heard the sound of lightning after 4 seconds of seeing it. What was the distance of the lightning from her?
(The velocity of sound in air is 340 m/s.)
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Solution
Given:
- Speed of sound in air (v) = 340 m/s,
- Time (T) = 4 second
Find: Distance (λ)
Formula: v = `lambda/"T"`
Calculations:
According to formula,
`340 = lambda/4`
λ = 340 × 4
λ = 1360 m
The distance of lightning flash from Nita will be 1360 m.
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