Modern Physics, 3rd Edition
3rd Edition
ISBN: 9780534493394
Author: Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher: Cengage Learning
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Chapter 7, Problem 4P
To determine
The current that is reflected at the boundary.
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A metal object having a length (10m), cross section area (0.5 mm2), and resistance (0.52) is connected to a potential difference source of 5V at room temperature. If the density of free electrons equals (8×1025 electron/m³), Calculate the thermal velocity.
In Millikan's oil-drop experiment, one looks at a small oil drop held motionless between two plates. Take the voltage between the plates to be 2370 V, and the plate separation to be 2.33 cm. The oil drop (of density 0.810 g/cm3) has a diameter of 4.35 ✕ 10−6 m. Find the charge (in C) on the drop.
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Modern Physics, 3rd Edition
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