Your cell phone antenna is broadcasting at 3 Giga Hertz What

Your cell phone antenna is broadcasting at 3 Giga Hertz. What is the wave length of your cell phone carrier wave? 1 meter 30 centimeter 3 centimeter 3 millimeter A 64 kg mass boxer oscillates at period of 1 second using elastic spring scale. If this person gains 17 kg within a year time, what will be the new period of his oscillation? 0.89 seconds 1 scconds 1.125 seconds 11.25 seconds

Solution

wavelength = 3*10^8 / 3*10^9= .1m

12) T=2pi (m/k)^1/2

T\'=2pi(m\'/k)^1/2

T/T\' = (64/81)^1/2

T\'=T*9/8 = 9/8 = 1.125 seconds