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alukav5142 [94]
3 years ago
10

The average distance from the sun to Pluto is approximately 6.10 × 109 km. How long does it take light from 

Physics
1 answer:
Scorpion4ik [409]3 years ago
3 0
V= \frac{S}{t}
t= \frac{S}{V}<u />
t= \frac{S}{c}
t= \frac{6.1*10^{12}}{299792458}
t=20347.4098071s

It takes 20347.4098071s for light from the sun to reach Pluto.
The 6.1*10^9 is replaced by 6.1*10^12 on line 4 because we convert the distance from km to m. 
c = speed of light. If a different value was given in the previous question then use that instead of the value I used to do the final calculation.
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Given

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Time at a quarter after the hour to half past i.e. 1 hr 45 min

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angle turned =90^{\circ}

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Chemical changes occur as energy is transferred when molecules- - or - to form one or more new substances
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