Answered

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If a flare occurs on the sun 5 astronomical units away, how much time would pass before a robot at that distance sees the light flash?

Sagot :

A robot at that distance sees the light flash at time = 2500sec

Given,

A robot sees the flash light from distance = 5 astronomical unit (AU)

A robot at that distance sees the light flash at time = ?

Solution,  

An Astronomical Unit can be defined as , the mean distance of the center of the Sun from the center of the Earth.

1 Astronomical Unit (AU) = 1.496 × 10¹¹m

Time for the light reach to the earth T = 8min 20 sec

speed of light c= 3 ×10¹¹m/s

T = distance/speed

Distance = 5AU

Speed = c

therefore ,

T time = 5 AU/C

AU/C=  5Time= 5 ( 8×60 + 20 )sec

Time = 2500 sec

A robot at that distance sees the light flash in 2500 seconds.

To know more about astronomical unit (AU)

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