How many excess electrons does oil drop have here
An oil drop whose mass is determined to be 3.3x10^-15 is held at rest between two large plates separated by 1cm when the potential difference between them is 340 V. How many excess electrons does this have here?
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A potter's wheel having a radius 0.54 m and a moment of inertia 11.7 kg·m2 is rotating freely at 48 rev/min. The potter can stop the wheel in 8.0 s by pressing a wet rag against the rim and exerting a radially inward force of 65 N. Find the
An airplane has a mass of 2.4e6 kg, and the air flows past the lower surface of the wings at 85 m/s. If the wings have a surface area of 1200 m2, how fast must the air flow over the upper surface of the wing if the plane is to stay in the air? Co
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An oil drop whose mass is determined to be 3.3x10^-15 is held at rest between two large plates separated by 1cm when the potential difference between them is 340 V.
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At a point P a distance d from a point charge, the potential relative to infinity is V and the electric-field magnitude is E. If you now move to a point S at which the potential is 0.333 V, the electric-field magnitude at S will be?
Why might a physician perform a Gram stain on a sample from a sick patient before prescribing an antibiotic?
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