Ernst Rutherford discovered the atomic nucleus by shooting alpha particles (helium nuclei) at gold atoms. An alpha particle (charge +2e, mass M) is approaching a gold nuclei (charge +Q) straight on. The alpha particle slows down and turns around at point B which is a distance W from the gold nuclei. Point A is 3W from point B. What is the kinetic energy of the alpha particle as it passes point A? Treat the gold nuclei as stationary. Hint: label the lengths. A OKQe W O 6KQe W O 3 KQe 2 W KQe 2W O 2KQe W B +Q

Ernst Rutherford discovered the atomic nucleus by shooting alpha particles (helium nuclei) at gold atoms. An alpha particle (charge +2e, mass M) is approaching a gold nuclei (charge +Q) straight on. The alpha particle slows down and turns around at point B which is a distance W from the gold nuclei. Point A is 3W from point B. What is the kinetic energy of the alpha particle as it passes point A? Treat the gold nuclei as stationary. Hint: label the lengths. A OKQe W O 6KQe W O 3 KQe 2 W KQe 2W O 2KQe W B +Q

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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1. How do you find the gravitational potential of two masses for any position around them that is outside the masses? Specifically, take the Earth and the Moon as an example. We need big masses like these because G is so small. Gravity is very weak. When we do electricity, we can work with smaller amounts of matter and smaller distances because electrical forces are stronger than gravitational forces. Here are the numbers https://nssdc.gsfc.nasa.gov/planetary/factsheet/moonfact.html MEarth = 5.97 × 1024 kg (Mass of Earth) MMoon = 7.35 × 1022 kg (mass of Moon) RE-M = 3.85 × 108 m (average separation of Earth and Moon centers) REarth = 6.378 × 106 m (radius of Earth) RMoon = 1.738 × 106 m (radius of Moon)
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