k, Here's the problem:(adsbygoogle = window.adsbygoogle || []).push({});

An electron is accelerated horizontally from rest in a television picture tube by a potential difference of 24600 V. It then passes between two horizontal plates 6.08 cm long and 1.42 cm apart that have a potential difference of 236 V. At what angle theta (in degrees) will the electron be traveling after it passes between the plates?

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Being that I have no clue how to EVEN APPROACH this problem, I just did random stuff. I have a feeling this problem involves the arctan function.. so, first I took the arctan of 1.42/6.08 - Wrong. Then the Arctan of E (which I calculated to be 16164) over the potential difference which accelerated the particle - Wrong. I tried variations of those two - Wrong. I honestly don't have the slightest clue where to go next

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My next problem goes:

A 2.76 microF capacitor is charged to 1230 V and a 6.21 microF capacitor is charged to 480 V. These capacitors are then disconnected from their batteries, and the positive plates are now connected to each other and the negative plates are connected to each other. What will be the potential difference across each? What will be the charge on the 2.76 microF capacitor? What will be the charge on the 6.21 microF capacitor?

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Once again, I have no clue how to approach. This is absolutely depressing. I spent an hour try'na figure out each of these problems (like I do with the rest of the 15 or so, unfortunately, Booo to bad books and even worse professors). Anyways, any suggestions.. ?

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# Deflection of an Electron and Capacitor problems

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