Answers: 2
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.
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Physics, 22.06.2019 14:00
What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration
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Physics, 22.06.2019 14:30
In order to do work, the force vector must be question 1 options: in a different direction than the acceleration vector. in a different direction than the displacement vector. in the same direction as the displacement vector and the motion. in the same direction as the acceleration vector.
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Physics, 22.06.2019 15:50
Decreased sensitivity to an unchanging stimulus is known as
Answers: 3
Will connecting two 10 ohm resistors in series with a battery will produce more or less equivalent r...
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