PRINTER VERSEION BACK NE Chapter 18, Problem 03 that each touches the others. Th

Question

PRINTER VERSEION BACK NE Chapter 18, Problem 03 that each touches the others. Then they are Four identical metallic objects carry the following charges: +1.26, +6.91, -4.89, and -9.74fC. The objects are brought simultaneously into separated. (a) What is the final charge on each object? (b) How many electrons (or protons) make up the final charge on each object? are brought simultaneously into contact, so (a) Number Units (b) Number Units LINK TO TEXT SAVE FOR LATER Question Attempts: 0 of 3 used yright © 2000-2015 by lohn wsey& Sons, Inc. or related companies. All rights Version 4.16.1.

Explanation / Answer

Here ,

as the metal spheres are identical ,

the potential on each sphere will be same after touching ,

hence , they will have equal charges after touching and seperating ,

charge on each object = (1.26 + 6.91 - 4.89 - 9.74)/(4)

charge on each object = -1.615 uC

the charge on each object is -1.615 uC

b)

as the charge is neagitve , there are excess electrons

number of electrons = total charge / charge on each electron

number of electrons = 1.615 *10^-6/(1.602 *10^-19)

number of electrons = 1.01 *10^13

the number of excess electrons is 1.01 *10^13

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