Physics
7th Edition
ISBN: 9780321625915
Author: Douglas C. Giancoli
Publisher: PEARSON
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Textbook Question
Chapter 1, Problem 1MCQ
A student’s weight displayed on a digital scale is 117.2 lb. This would suggest her weight is
- within 1% of 117.2 lb.
- exactly 117.2 lb.
- somewhere between 117.18 and 117.22 lb.
- somewhere between 117.0 and 117.4 lb.
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Students have asked these similar questions
Example
Two charges, one with +10 μC of charge, and
another with - 7.0 μC of charge are placed in
line with each other and held at a fixed distance
of 0.45 m. Where can you put a 3rd charge of +5
μC, so that the net force on the 3rd charge is
zero?
*
Coulomb's Law Example
Three charges are positioned as seen below. Charge
1 is +2.0 μC and charge 2 is +8.0μC, and charge 3 is -
6.0MC.
What is the magnitude and the direction of the force
on charge 2 due to charges 1 and 3?
93
kq92
F
==
2
r13 = 0.090m
91
r12 = 0.12m
92
Coulomb's Constant: k = 8.99x10+9 Nm²/C²
✓
Make sure to draw a Free Body Diagram as well
Chapter 1 Solutions
Physics
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