How does changing the amplitude affect the sound that you
hear?...
Physics, 18.03.2021 09:30 keva1p6dk26
How does changing the amplitude affect the sound that you
hear?
Answers: 3
Physics, 21.06.2019 16:00
Answer quickly (15 points) a comet is approaching earth. describe earth’s gravitational pull as the comet gets closer to it. a. remain constant b. increase c. decrease d. reversed
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Physics, 21.06.2019 22:00
Why do electron microscopes have higher resolving power than light microscopes?
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Physics, 21.06.2019 23:00
How many dots must be added to the symbol to properly represent a standard nitrogen ion? a) 1 b) 3 c) 5 d) 8
Answers: 1
Physics, 22.06.2019 00:30
Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.
Answers: 2
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