Physics, 16.11.2020 14:00 shahfaisal
A sound source produces 85 sound wave compressions in 5 seconds. the wave length of the sound is 20m. calculate the
a)frequency of the sound waves
b)the speed of the wave
Answers: 3
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Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?
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Which branches of natural science include the study of an organism that lived 10 million years ago
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Answers: 1
A sound source produces 85 sound wave compressions in 5 seconds. the wave length of the sound is 20m...
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