An airplane flies 200 km due west from city a to city b and, Ask an Expert

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Q. The nucleus of the helium atom contains two protons that are separated by about 3.0 X 10-15 m. Find the magnitude of the electrostatic force that each proton exerts on the other.

Q. An airplane flies 200km due west from city A to city B and then 300 km in the direction of 30 degrees North of West from city B to city C. In straight-line distance, how far is city C from city A?

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