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Q. If the highest diam of the electron orbit before the electron hits wall of the tube is 2.50 cm, what is the highest electron kinetic energy?

Q. A Father pulls his sons across the son on a sled. The children and sled together weigh 550-N. The father pulls the sled with a force of 400-N at an angle of 40 degrees above the horizontal. Avoiding friction, determine out the acceleration of the sled.

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