Answer:
length of a quarter wavelength antenna for transmitter elf waves are zero
Explanation:
Find the length of a quarter wavelength antenna for transmitter elf waves
Given information
frequency (ELF waves) → 77Hz
Speed of light → 3
m/s

where
→ wavelength of the antenna
f → frequency of the ELF waves
→ speed of light
so rewrite the equation in
from

Substitute
= 
Substitute 75Hz = f

m
since we get this value,but this size of antenna mount on submarine is not possible.
so
is zero
Answer:
1.A compound is when two substances are put together and there is a reaction creating a new substance Ex. H20. A mixture is when two substances are put together, there is no reaction and they can be separated easier than compounds. Ex. salad dressing.
2.Atomic bonds
3.Compound
4.Element
5.Mixture
Explanation:
degree celcius and degreee frahanit