1. A cop speaks into his walkie-talkie, which emits a radio wave with a frequency of 7.3E+7 Hz. What is the wavelength of this electromagnetic wave?
2. A 5 cm tall light bulb is placed at a distance of 45.1 cm from a flat mirror. A virtual image is produced at what distance?
Fri Mar 27 2020 16:22:24 GMT-0400 (EDT)