(a) The distance to a star is approximately 9.00 times 10^18 m. If this star wer

Question

(a) The distance to a star is approximately 9.00 times 10^18 m. If this star were to burn out today, in how many years would we see it disappear? (b) How long does it take for sunlight to reach Saturn? Your response differs from the correct answer by more than 100%. minutes (c) How long does it take for a microwave radar signal to travel from Earth to the Moon and back? (d) How long does it take for a radio wave to travel once around the Earth in a great circle, close to the planet's surface? (e) How long does it take for light to reach you from a lightning stroke 8.5 km away? Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. s

Explanation / Answer

Solving first question as all questions are different and treating each question as different question

So solving first question

Time taken by light to reach us=distance/speed of light

We got time=3*10(10) sec

Converting in years

We got time=950.6 years

Solving second question

(b)

Time taken=distance from saturn/speed of light=4763.3 sec

(e)

Time=2.8*10(-5) sec

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