Public television station kqed in san francisco broadcasts a sinusoidal radio signal at a power of 316 kw. assume that the wave spreads out uniformly into a hemisphere above the ground.

(a) at a home 5.50 km away from the antenna, what average pressure does this wave exert on a totally reflecting surface?

(b) at a home 5.50 km away from the antenna, what are the amplitudes of the electric and magnetic fields of the wave?

(c) at a home 5.50 km away from the antenna, what is the average density of the energy this wave carries?

(d) for the energy density in part (c), what percentage is due to the electric field?

(e) for the energy density in part (c), what percentage is due to the magnetic field?

the answer would be   dignified - apex

we have been given a quadratic function and we need to restrict the domain such that it becomes a one to one function.

we know that vertex of this quadratic function occurs at (5,2).

further, we know that range of this function is .

if we restrict the domain of this function to either or , it will become one to one function.

let us know find its inverse.

upon interchanging x and y, we get:

let us now solve this function for y.

hence, the inverse function would be if we restrict the domain of original function to and the inverse function would be if we restrict the domain to .

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it