Question

If a storm is 7.5 kilometers away, how much time is expected between observations of lightning and thunder? Round your answer to one decimal place

Answer 1

22.7

Step-by-step explanation:

Answer 2

22.5 s is the correct answer to the given question .

Step-by-step explanation:

Given that

`d=7.5km=7.5* 10^3 m`

For light:

We know that speed of light c

`c=3* 10^8 m/s`

We know that

`Distance = Speed * timed=C\time tt=(D)/(t)t=(7.5* 10^3)/(3* 10^8)\ st=2.5* 10^(-5)st=0.025 ms`

For thunder :

Speed of sound ,v=332 m/s

`Time\ taken\ by\ sound \\t\’=(7500)/(332)=22.59 s`

Therefore the difference between time is given as follows

`\Delta t= t' - \ t=22.59-2.5* 10^(-5)=22.59 s`

22.5 is the answer