Answer:
False
Explanation:
In miles per hour, light speed is about 670,616,629 mph
I do not agree with the statement.
The "substance" can be a compound. It's "pure"
as long as there's nothing else in it but its name.
'Pure' water is 100% H₂O with nothing else in it.
'Pure' table salt is 100% NaCl with nothing else in it.
'Pure' carbon dioxide is 100% CO₂ with nothing else in it.
These example substances are all compounds, not elements.
Answer:
a

b

c

d

Explanation:
From the question we are told that
The frequency of the radio station is 
The magnitude of the magnetic field is 
Generally the wavelength is mathematically represented as

Here c is the speed of light with value 
So

=> 
Generally the angular frequency is mathematically represented as

=> 
=> 
Generally the wave number is mathematically represented as
=> 
=> 
=> 
Generally the amplitude of the electric field at this distance from the transmitter is mathematically represented as

=> 
=> 