Surface tension is the inward pull that tends to minimize the surface area of a liquid. Water has high surface tension because o
f hydrogen bonding. In the diagram below, consider a molecule within the bulk of the liquid. This molecule experiences attractions to its neighboring molecules in all directions. These forces, shown by the arrows, average out to zero and there is no net force on the molecule. How is the situation different for a molecule at the surface? How does this give rise to surface tension?
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The question is incomplete, here is the complete question:
A VHF television station assigned to channel transmits its signal using radio waves with a frequency of 66.0 MHz. Calculate the wavelength of the radio waves. Round your answer to 3 significant digits.
Answer: The wavelength of the radio waves is 4.54 m
<u>Explanation:</u>
To calculate the wavelength of light, we use the equation:
where,
= wavelength of the light
c = speed of light =
= frequency of light =
Putting the values in above equation, we get:
Hence, the wavelength of the radio waves is 4.54 m