T3B11:

What is the approximate velocity of a radio wave as it travels through free space?

  1. 150,000 kilometers per second
  2. 300,000,000 meters per second
  3. 300,000,000 miles per hour
  4. 150,000 miles per hour
T3B01 T3B02 T3B03 T3B04 T3B05 T3B06 T3B07 T3B08 T3B09 T3B10 T3B11