Question

You point a laser at a building and send a pulse of light to it. The light reflects off the building and arrives 1.827 × 10^-6 seconds after you sent the pulse out. How far away is the building

Answer 1

Distance, d = 274.05 meters

Step-by-step explanation:

It is given that,

The time taken by the laser light to reflect off the building and arriving is,
`t=1.827* 10^(-6)\ s`

We need to find the distance between the building and you. Let the distance between the person and the building during thee process of reflection and come back is 2d. So,

The speed of light is c is calculated as :

`c=(2d)/(t)`

`d=(ct)/(2)`

`d=(3* 10^8* 1.827* 10^(-6))/(2)`

d = 274.05 meters

So, the building is 274.05 meters far from you. Hence, this is the required solution.