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Q1. A good model for a radio antenna is a dipole. P1 is on the perpendicular bisector of the dipole, and P2 is along the axis of the dipole in the direction of dipole vector ˆp. P1 and P2 are both a distance 100m from the center of the dipole.

The magnitude of each of charges is 4.60 μC.

What is the magnitude of electric field at P1? Hint: The direction of the dipole vector ˆp is from the negative charge to the positive charge. React in units of N/C.

Q2. A stone is thrown perpendicularly upward with the speed of 14.60 from the edge of a cliff 60.5 high. What total distance did it travel?

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