(a) An electron in a television tube travels the 16- cm distance from the grid to the...

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(a) An electron in a television tube travels the 16- cm distance from the grid to the screen at an average speed of 4 × 107 m/s. How long does the trip take? 

(b) An electron in a current-carrying wire travels at an average speed of 4 × 10−5 m/s. How long does it take to travel 16 cm?

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