If the speed of light is 3 × 10⁵ km/s and 1 km = 0.62 miles,what is the speed of light in miles/hr? A)670 million miles/hr B)670 thousand miles/hr C)186 miles/hr D)186 thousand miles/hr E)3.2 billion miles/hr

Question

Quizplus · Accepted Answer

Firstly, we need to convert km/s to miles/s. We know that 1 km = 0.62 miles, therefore:
Speed in miles/s = (Speed in km/s) x (0.62 miles/1 km)
Speed in miles/s = (3 × 10^5 km/s) x 0.62
Speed in miles/s = 1.86 × 10^5 miles/s

Now, we can convert miles/s to miles/hr:
Speed in miles/hr = (Speed in miles/s) x (3600 seconds/hour)
Speed in miles/hr = (1.86 × 10^5 miles/s) x 3600
Speed in miles/hr = 6.696 × 10^8 miles/hr

Therefore, the answer is A) 670 million miles/hr.

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