A charged dust speck with mass, m = 4.1 g, loses 24 mJ of kinetic energy as it moves aross an electric potential, AV = -121 V. (a) How much work was done on the dust speck? Wnet = (b) What was the change in the dust speck's electric potential energy change, assuming that Wnet = WE? AU = mJ Q = mJ (c) Find the charge on the dust speck. μC

A charged dust speck with mass, m = 4.1 g, loses 24 mJ of kinetic energy as it moves aross an electric potential, AV = -121 V. (a) How much work was done on the dust speck? Wnet = (b) What was the change in the dust speck's electric potential energy change, assuming that Wnet = WE? AU = mJ Q = mJ (c) Find the charge on the dust speck. μC

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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A charged dust speck with mass, m = 4.1 g, loses 24 mJ of kinetic energy as it moves aross an electric potential, AV = -121 V. (a) How much work was done on the dust speck? Wnet = -24 mJ (b) What was the change in the dust speck's electric potential energy change, assuming that Wnet = WĘ? AU = |24 mJ (c) Find the charge on the dust speck. 24e-3 -121 Q = = -198.3 HC (d) What was the dust speck's final kinetic energy if it was initially moving at a speed of 4.19 m/s? Kf = (e) So, how fast was it after crossing the potential differene? Vf = m/s