Question

In a thunderstorm, the formula: M = t 5.6 gives the approximate distance, M , in miles, from a lightning strike if it takes t seconds to hear the thunder after seeing the lightning. If you are 7 miles away from the lightning flash, how long will it take the sound of the thunder to reach you.?

Answer 1

Answer:

$t=1.25\,s$

Explanation:

In a thunderstorm the lightening is seen first then the roar of the lightening is heard because of the fact that speed of the light is much greater than the speed of the sound.

Given that:

Relation   $M=t\times 5.6$

M= 7 miles

t=?

where:

t= time in seconds

M= distance in miles

Now,

Putting the given values in the relation above

$7=t\times 5.6$

$t=1.25\,s$