Modern Physics
Modern Physics
2nd Edition
ISBN: 9780805303087
Author: Randy Harris
Publisher: Addison Wesley
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Chapter 6, Problem 21E
To determine

The transmission coefficient for electron beam of energy.

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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 2340 V, and the plate separation to be 2.30 cm. The oil drop (of density 0.810 g/cm?) has a diameter of 4.15 x 10- m. Find the charge (in C) on the drop.
Chapter 38, Problem 076 Suppose a beam of 4.60 eV protons strikes a potential energy barrier of height 6.60 eV and thickness 0.650 nm, at a rate equivalent to a current of 1110 A. (a) How many years would you have to wait (on average) for one proton to be transmitted through the barrier? (b) How long would you have to wait if the beam consisted of electrons rather than protons? (a) Number Units (b) Number Units
In a parallel-plate diode, the anode is at 250 V with respect to the cathode which is 4 mm away from it . An electron is emitted from cathode with an initial yelocity towards cathode of 2×102 m/s.  calculate : 1/ the arrival velovity of electron at andode ? 2/ time of transit?
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