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Q. A magnetic field near the ceiling points up and is decreasing. Looking up at the ceiling, does the non-Coulomb electric field curl clockwise or counter-clockwise?

Q. A 239 g ball is tied to a string. It is pulled to an angle of 6.80 ^circ and released to swing as a pendulum. A student with a stopwatch finds that 11 oscillations take 11.0 s. how long is the string?

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