In Problems 63 through 66 you are given the equation(s) used to solve a problem. For each of these
a. Write a realistic problem for which this is the correct equation(s).
b. Finish the solution of the problem
(a) What is the strength of the electric field between two parallel conducting planes when a proton is discharged in an area between planes with an acceleration of ?
(b) The solution is
Theory used :
The electric field between two conducting parallel plates is the potential difference divided by the distance by which they are separated.
(a) Realistic Problem :
What is the strength of the electric field between two parallel conducting planes when a proton is discharged in an area between planes with an acceleration of ?
(b) Solution :
One type of ink-jet printer, called an electrostatic ink-jet printer, forms the letters by using deflecting electrodes to steer charged ink drops up and down vertically as the ink jet sweeps horizontally across the page. The ink jet forms diameter drops of ink, charges them by spraying electrons on the surface, and shoots them toward the page at a speed of . Along the way, the drops pass through two horizontal, parallel electrodes that are wide, and spaced apart. The distance from the center of the electrodes to the paper is . To form the tallest letters, which have a height of , the drops need to be deflected upward (or downward) by . What electric field strength is needed between the electrodes to achieve this deflection? Ink, which consists of dye particles suspended in alcohol, has a density of .
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