How can light be defined in simplest form?
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Explain what is the transparent?
Explain what is the shadows?
When sound waves travel from air to water, what happens to its frequency?
which electronic devices used at low frequencies? and high frequencies?and microwave frequencies?
What is the difference between photodiode & photocell.
what is mariners compass
what is the principle used in electromagnetic spectrum?and why there is a necessary of having an electron with unpaired spins?and how the uncertainity principle is used to determine the frequency of an spectral lines ?
Explain why does a tea kettle sing?
What is balanced field takeoff?
Why in cold countries, the water at the surface freezes and in the inner portion it is in the sate of water ?
What are the weights in pounds of liquid gallons?
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