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

Distance, d = 274.05 meters

Explanation:

It is given that,

The time taken by the laser light to reflect off the building and arriving is,

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 :

d = 274.05 meters

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

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.

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