Question

An enormous thunderstorm covers Dallas-Ft. Worth. Your best friend Clark is a storm chaser and heads to the center of the storm to take some readings while you stay dry at home. While Clark is at the center of the storm, he sees and hears lightning strike a tree that is 155 m from where he is standing. You are 135 km from the tree. How long does it take for the sound to reach Clark? Assume the speed of sound is 343 m/s.

How long does it take for the sound to reach you?

Answer 1

Distance between thee amd clark 155m On&, Speed of Sand Cv) 343 mys So, time faten by saund to reach clark 155 m o. 452 sec. 343 ms And, Distance betwee free and you 135 km 1.35 x1a5r m Speed sf light= 3xi08nys ime taken by ight to reach you So, .35xl05m 3X108 mys te 0.45x1D. sec . t = o.45 s milli second

l.35 X tom and, time taken by sound to rea ch you: t 343 mys 0393. 586 Sec t 6.56 min

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