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Ket [755]
3 years ago
5

In a thunderstorm, the formula: M = t 5.6 gives the approximate distance, M , in miles, from a lightning strike if it takes t se

conds 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.?
Physics
1 answer:
GrogVix [38]3 years ago
8 0

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

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Answer:

The x component of the resultant force is -7.27N.

Explanation:

To obtain the x component of the resultant force, first we have to know the x components of the other forces. To do this, we just have to do some trigonometry:

|F_{1x}|=|F_1|\cos\theta_1=9.20N\cos62.0\°=4.31N \\|F_{2x}|=|F_2|\cos\theta_2=5.00N\cos53.6\°=2.96N

Since both vectors are in the left side of the y-axis, they have a negative x component. So:

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Finally, we sum both components to obtain the component of the resultant force:

F_{Rx}=-4.31N-2.96N=-7.27N

In words, the x component of the resultant force is -7.27N.

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A.

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