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Physics, 21.06.2019 22:30
During takeoff, the sound intensity level of a jet engine is 170db at a distance of 34 m. what's the sound intensity level at a distance of 1.0 km?
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Astudent pushes on a 20.0 kg box with a force of 50 n at an angle of 30° below the horizontal. the box accelerates at a rate of 0.5 m/s2 across a horizontal floor. what is the value of the normal force on the box? 200 n 243 n 156 n 225 n
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What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?
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Physics, 22.06.2019 17:00
If you put a helium-filled balloon in the refrigerator, what will happen?
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Student measures the weight of a bag of bananas with a spring balance.
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