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1.Which of the following statements about light waves is true? check all correct answers
A. They come from sources across space
B. They travel in a straight line from their source
C. They can travel through any type of material
D. They can be reflected by some types of material
2.Transparent allows some light through
A. True
B. false
Answers: 2
Physics, 22.06.2019 00:30
Which of the following elements is in the same period as phosphorus? a. carbon c. nitrogen b. magnesium d. oxygen select the best answer from the choices provided a b c d
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Physics, 22.06.2019 14:30
When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?
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Physics, 22.06.2019 15:30
What is the increase in density of a medium due to wave travel?
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1.Which of the following s...
1.Which of the following s...
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