College Physics: A Strategic Approach, Books a la Carte Edition (4th Edition)
4th Edition
ISBN: 9780134700502
Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher: PEARSON
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Textbook Question
Chapter 8, Problem 18MCQ
Two children hold opposite ends of a lightweight, 1.8-m-long horizontal pole with a water bucket hanging from it. The older child supports twice as much weight as the younger child. How far is the bucket from the older child?
A. 0.3 m
B. 0.6 m
C. 0.9 m
D. 1.2 m
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I do not understand the process to answer the second part of question b. Please help me understand how to get there!
Rank the six combinations of electric charges on the basis of the electric force acting on 91. Define forces pointing to the right as positive and forces pointing to the left as negative.
Rank in increasing order by placing the most negative on the left and the most positive on the right. To rank items as equivalent, overlap them.
▸ View Available Hint(s)
[most negative
91 = +1nC
92 = +1nC
91 = -1nC
93 = +1nC
92- +1nC
93 = +1nC
-1nC
92- -1nC
93- -1nC
91= +1nC
92 = +1nC
93=-1nC
91
+1nC
92=-1nC
93=-1nC
91 = +1nC
2 = −1nC
93 = +1nC
The correct ranking cannot be determined.
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most positive
Part A
Find the x-component of the electric field at the origin, point O.
Express your answer in newtons per coulomb to three significant figures, keeping in mind that an x component that points to the right is positive.
▸ View Available Hint(s)
Eoz =
Η ΑΣΦ
?
N/C
Submit
Part B
Now, assume that charge q2 is negative; q2 = -6 nC, as shown in (Figure 2). What is the x-component of the net electric field at the origin, point O?
Express your answer in newtons per coulomb to three significant figures, keeping in mind that an x component that points to the right is positive.
▸ View Available Hint(s)
Eoz=
Η ΑΣΦ
?
N/C
Chapter 8 Solutions
College Physics: A Strategic Approach, Books a la Carte Edition (4th Edition)
Ch. 8 - Prob. 1CQCh. 8 - Could a ladder on a level floor lean against a...Ch. 8 - Prob. 3CQCh. 8 - Prob. 4CQCh. 8 - Prob. 5CQCh. 8 - Prob. 6CQCh. 8 - Prob. 7CQCh. 8 - A spring exerts a 10 N force after being stretched...Ch. 8 - Prob. 9CQCh. 8 - A typical mattress has a network of springs that...
Ch. 8 - Take a spring and cut it in half to make two...Ch. 8 - A wire is stretched right to its breaking point by...Ch. 8 - Prob. 13CQCh. 8 - Prob. 14CQCh. 8 - Steel nails are rigid and unbending. Steel wool is...Ch. 8 - Two children hold opposite ends of a lightweight,...Ch. 8 - Prob. 19MCQCh. 8 - Prob. 20MCQCh. 8 - Prob. 21MCQCh. 8 - Prob. 22MCQCh. 8 - Prob. 23MCQCh. 8 - Prob. 24MCQCh. 8 - Prob. 25MCQCh. 8 - Prob. 26MCQCh. 8 - You have a heavy piece of equipment hanging from a...Ch. 8 - Prob. 1PCh. 8 - Prob. 2PCh. 8 - Prob. 3PCh. 8 - Prob. 4PCh. 8 - Youre carrying a 3.6-m-long, 25 kg pole to a...Ch. 8 - Prob. 6PCh. 8 - Prob. 7PCh. 8 - Prob. 9PCh. 8 - Prob. 11PCh. 8 - Prob. 13PCh. 8 - Prob. 14PCh. 8 - Prob. 15PCh. 8 - The stability of a vehicle is often rated by the...Ch. 8 - Prob. 18PCh. 8 - A car manufacturer claims that you can drive its...Ch. 8 - Prob. 20PCh. 8 - An orthodontic spring, connected between the upper...Ch. 8 - Prob. 22PCh. 8 - Experiments using optical tweezers measure the...Ch. 8 - Prob. 24PCh. 8 - One end of a 10-cm-long spring is attached to the...Ch. 8 - Prob. 26PCh. 8 - A spring has an unstretched length of 10 cm. It...Ch. 8 - A spring stretches 5.0 cm when a 0.20 kg block is...Ch. 8 - You need to make a spring scale to measure the...Ch. 8 - Prob. 30PCh. 8 - A force stretches a wire by 1.0 mm. a. A second...Ch. 8 - Prob. 32PCh. 8 - What hanging mass will stretch a 2.0-m-long,...Ch. 8 - An 80-cm-long, 1.0-mm-diameter steel guitar string...Ch. 8 - A mineshaft has an ore elevator hung from a single...Ch. 8 - The normal force of the ground on the foot can...Ch. 8 - A three-legged wooden bar stool made out of solid...Ch. 8 - Prob. 38PCh. 8 - Prob. 39PCh. 8 - Prob. 40PCh. 8 - A glass optical fiber in a communications system...Ch. 8 - The Achilles tendon connects the muscles in your...Ch. 8 - Prob. 44PCh. 8 - Prob. 47PCh. 8 - Prob. 48PCh. 8 - Prob. 49PCh. 8 - Prob. 51GPCh. 8 - Prob. 52GPCh. 8 - Prob. 53GPCh. 8 - Prob. 55GPCh. 8 - Two identical, side-by-side springs with spring...Ch. 8 - Prob. 57GPCh. 8 - Prob. 58GPCh. 8 - Prob. 59GPCh. 8 - A 25 kg child bounces on a pogo stick. The pogo...Ch. 8 - Prob. 61GPCh. 8 - In the hammer throw, an athlete spins a heavy mass...Ch. 8 - There is a disk of cartilage between each pair of...Ch. 8 - Orb spiders make silk with a typical diameter of...Ch. 8 - Larger animals have sturdier bones than smaller...Ch. 8 - Prob. 67GPCh. 8 - Prob. 68GPCh. 8 - Prob. 69MSPPCh. 8 - Prob. 70MSPPCh. 8 - Prob. 71MSPPCh. 8 - Prob. 72MSPP
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