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Sagot :
Answer:
Whilst there is no upper limit, I dont think you will find radio broadcasts with wavelengths greater than 2000m (BBC Radio 4 at 1500m comes to mind). There used to be some French staions on Long wave- not sure of theier wavelength but not that much more/less than 1500m.
At the lower end, it depends on where you start to call the waves microwaves and whether you decide microwaves are or are not radio waves. If you made an estimate of waves below say 20cm in wavelength are definitely microwAves, this puts radio waves as being 2000m to 0.2 m.
Explanation:
hope it helps
Explanation:I get
8
⋅
10
21
meters.
Explanation:
Well, we first need to find the frequency of the wave, that is,
f
=
1
T
T
is the period of the wave in seconds
And so,
f
=
1
2.67
⋅
10
−
15
s
≈
3.75
⋅
10
14
s
−
1
=
3.75
⋅
10
−
14
Hz
Now, we use the wavelength equation, which states that,
λ
=
v
f
v
is the velocity of the wave in meters per second
f
is the frequency of the wave in hertz
So, plugging in the values, we get,
λ
=
3
⋅
10
8
m/s
3.75
⋅
10
−
14
Hz
=
3
⋅
10
8
m
s
−
1
3.75
⋅
10
−
14
s
−
1
=
8
⋅
10
21
m
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