Friday, October 30, 2015

The speed of light in vacuum is about:


A. 1100 ft/s
B. 93 × 106 m/s
C. 6 × 1023 m/s
D. 3 × 1010 cm/s
E. 186, 000 mph

 Ans: D. 3 × 1010 cm/s

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)