an observer A fires a gun and another observer B at a distance 1650 m away from A hears its sound . If the speed of sound is 330 m/s^-1 , find the time when B will hear the sound after firing by A.

5 seconds

Explanation:

Data provided in the question as per the question is as follows

Distance = 1,650 meter

Speed of the sound is 330 m/s

Based on the given information, the time taken is

As we know that

So,

= 5 seconds

We simply divided the total distance from the speed so that the time taken could be come and the same is to be considered

because it says use -2,0,and 2 for x, we can plug those numbers into the equation. y/4=3/4(-2)+2   y/4= -1 1/2 +2 now to get x by itself, we can multiply each side by 4. y=-6+8 which equals y=2 when x=-2. now you can do the same thing with 0 and 2 as x. you get y=8 when x=0 and y=14 when x=2.

x   |   y

-2 |   2

0   |   8

2   |   14

spectral lines lyman is one set