(I) AM radio signals have frequencies between 550 kHz and 1600 kHz (kilohertz) and trave with a speed of 3.0 X 108 m/s. What are the wavelengths of these signals? On FM the frequencies range from 88 MHz to 108 MHz (megahertz) and travel at the same speed. Wh are their wavelengths?
1/11/16 Phys 20A WEEK TWO 1. inner planets rotate faster than outer planets 2. Kepler’s laws a. 1. orbits are ellipse with sun at one focus 3. planets from stars a. stars twinkle, planets don’t b. bc planets have bigger mass, so twinkling of particles makes light more constant c. planets shine: because reflect sun’s light d. planets can be brighter than most stars (venus and jupiter) or as faint as other stars (uranus and neptune) depending on distance and size