This problem has been solved!See the answerCommunication with submerged submarines via radio waves is difficult because seawater is conductive and absorbs electromagnetic waves. Penetration into the ocean is greater at longer wavelengths, so the United States has radio installations that transmit at 76Hz for submarine communications. What is the approximate wavelength of those extremely low-frequency waves?500 km1000 km2000 km4000 km

4000 km

Explanation:

as we know velocity of electromagnetic wave is c

frequency  given (f) = 76 Hz

wavelength ?

using

λ

λ =  

λ =    ≈4000 km

 so final answer λ = 4000km

the following is queen elizabeth’s purposes:

- to encourage the parliament that the technique of picking successors to the seat based merely on birthright needs to be reviewed.

- (not) to convince the parliament that her kid should not be measured as a likely choice for heir to the english power.

- to persuade the parliament that merely since she has a child does not assure that the kid will be a capable leader.

- to sway the parliament how shattering it could be if they proceeded discourteously concerning her or her child.

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray