What is the minimum speed must give the air at the top

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Q. A proton is initially at rest at a point where the potential is 502 V. Some time later the proton is at a point where the potential is 198 V. If no force other than the electrostatic force acts on the proton, what is its final kinetic energy.

Q. On a bet, you try to remove water from a glass by blowing across the top of a vertical straw immersed in the water. What is the minimum speed you must give the air at the top of the straw to draw water upward through a height of 2.1 cm?

Reference no: EM1363293

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