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Q. Two identical point charges (q = +7.90 x 10-6 C) are fixed at opposite corners of a square whose sides have a length of 0.450 m. A test charge (q0 = -9.80 x 10-8 C), with a mass of 1.20 x 10-8 kg, is released from rest at one of the corners of the square. Determine the speed of the test charge when it reaches the center of the square.

Q. The rms speed of the molecules in 1.8 of hydrogen gas is 1600 m/s. What is the total translational kinetic energy of the gas molecules?

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