The speed of light in a vacuum is 3.00 × 10⁸ m/s.What is the speed of light in units of kilometers per hour? A) 1.20 × 10^-2 km/hr B) 8.33 × 10¹ km/hr C) 8.33 × 10⁷ km/hr D) 1.08 × 10⁹ km/hr E) 1.08 × 10¹⁵ km/hr

Question

Quizplus · Accepted Answer

To convert the speed of light from meters per second to kilometers per hour, multiply by 3600 (the number of seconds in an hour) and divide by 1000 (to convert meters to kilometers). This gives $3.00 \times 10^8 \times 3600 / 1000 = 1.08 \times 10^9$ km/hr.

The Speed of Light in a Vacuum Is 3