Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
A cell phone transmits at a frequency of 1.95×109 Hz . What is the wavelength of the electromagnetic wave used by this phone?
- oubaasLv 71 month ago
wavelength λ = c/f = 3.0*10^8 m/sec /(1.95*10^9) sec^-1 = 0.154 m (154 mm)
- ZirpLv 51 month ago
I assume you mean 1.95 x 10⁹ (use the ^-button), aka 1950 MHz
300000 divided by 1950---> 154 mm
- billrussell42Lv 71 month ago
1.95×109 Hz ? that is about 212 Hz, much too low to be a cell phone frequency...