Answer:
2.83 m
Explanation:
The relationship between frequency and wavelength for an electromagnetic wave is given by
![\lambda=\frac{c}{f}](https://tex.z-dn.net/?f=%5Clambda%3D%5Cfrac%7Bc%7D%7Bf%7D)
where
is the wavelength
is the speed of light
is the frequency
For the FM radio waves in this problem, we have:
is the minimum frequency, so the maximum wavelength is
![\lambda_2=\frac{c}{f_1}=\frac{3\cdot 10^8}{89\cdot 10^6}=3.37 m](https://tex.z-dn.net/?f=%5Clambda_2%3D%5Cfrac%7Bc%7D%7Bf_1%7D%3D%5Cfrac%7B3%5Ccdot%2010%5E8%7D%7B89%5Ccdot%2010%5E6%7D%3D3.37%20m)
The maximum frequency is instead
![f_2=106 MHz=106\cdot 10^6 Hz](https://tex.z-dn.net/?f=f_2%3D106%20MHz%3D106%5Ccdot%2010%5E6%20Hz)
Therefore, the minimum wavelength is
![\lambda_1=\frac{c}{f_2}=\frac{3\cdot 10^8}{106\cdot 10^6}=2.83 m](https://tex.z-dn.net/?f=%5Clambda_1%3D%5Cfrac%7Bc%7D%7Bf_2%7D%3D%5Cfrac%7B3%5Ccdot%2010%5E8%7D%7B106%5Ccdot%2010%5E6%7D%3D2.83%20m)
So, the wavelength at the beginning of the range is 2.83 m.
A robot character that can transform into a car
Potential Energy = mgh,
where m = mass in kg, g ≈ 10 m/s², h = height above ground = 8 m
PE = mgh
= 70*10*8 = 5600 J
<span>Ocean tides are highest when the sun, Earth, and the moon
are nearly in a line. That means at the times of New Moon
and Full Moon.</span>