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In a television picture tube (CRT), electrons are accelerated by thousands of volts through a vacuum....

In a television picture tube (CRT), electrons are accelerated by thousands of volts through a vacuum. If a television set is laid on its back, would electrons be able to move upward against the force of gravity? Find the potential difference, acting over a distance of 3.5 cm, that would be needed to balance the downward force of gravity so that an electron would remain stationary. Assume that the electric field is uniform. [Electron mass : 9.11 x 10-31 kg]

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