Answer:
Multiply the wavelength by the frequency.
Explanation:
The velocity of a wave is the frequency times the wavelength.
Cell phones use RF waves from nearby cell towers. RF waves fall in between FM radio waves and microwaves
East component: 3.9 m/s
South component: 1.8 m/s
Explanation:
We have to resolve the velocity vector along the east and south axis.
Taking east as positive x-direction and south as positive y-direction, the components of the velocity are given by:

where
v = 4.3 m/s is the magnitude of the velocity
is the angle between the direction of the velocity and of the x-axis
Substituting into the equations, we find:
East component:

South component:

Learn more about vector components:
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Silicon: Si
Iron: Fe
K: Potassium
Hg: Mercury
I: Iodine
Copper: Cu
A. Bromine
B.Beryllium
C. Gold
D. Tin
A. Alkaline Metals
B. Transition Metals
C. Reactive Nonmetals
D. Alkaline Earth Metals