Radio waves travel at the speed of light, which is 3.00x10^8 m/s. what is the frequency of a radio wave that has a wavelength of 2.5 m?

a. 8.3x10^-9hz
b. 12hz
c. 1.2x10^8hz
d. 7.5x10^8hz

Two conductors, a and b, are each in the shape of a tetrahedron. but of different sizes. they are charged in the following manner: 1. tetrahedron a is charged from an electrostatic generator to charge q. 2. tetrahedron a is briefly touched to tetrahedron b. 3. steps 1 and 2 are repeated until the charge on tetrahedron b reaches a maximum value. if the charge on tetrahedron b was q/4 after the first time it touched tetrahedron a. what is the final charge qbmax on tetrahedron b?