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Q. A very small charged block with a mass of 2.70g is placed on an insulated, frictionless plane inclined at an angle of 17° with respect to the horizontal. The block does not slide down the plane because of a 460N/C uniform electric field those points equivalent to the surface downward along the plane. What is the charge on block?

Q. An airplane whose air speed is 608 is supposed to fly in a straight path 38 north of east. But a steady 86 wind is blowing from the north. In what direction must the plane head?

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