EP COSMIC PERSPECTIVE-MOD.MASTERING
9th Edition
ISBN: 9780137453481
Author: Bennett
Publisher: SAVVAS L
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Chapter 23, Problem 36EAP
Choose the best answer to each of the following. Explain your reasoning with one or more complete sentences.
36. Which region of the early universe was most likely to become a galaxy? (a) a region whose matter density was lower than average (b) a region whose matter density was higher than average (c) a region with an unusual concentration of dark energy
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A spider begins to spin a web by first hanging from a ceiling by his fine, silk fiber. He has a mass of 0.025 kg and a charge of 3.5 μC. A second spider with a charge of 4.2 μC rests in her own web exactly 2.1 m vertically below the first
spider.
(a) What is the magnitude of the electric field due to the charge on the second spider at the position of the first spider?
8.57e3
N/C
(b) What is the tension in the silk fiber above the first spider?
0.125
How does the electric field relate to the force? How do you calculate the net force? N
Point charges of 6.50 μC and -2.50 μC are placed 0.300 m apart. (Assume the negative charge is located to the right of the positive charge. Include the sign of the value in your answers.)
(a) Where can a third charge be placed so that the net force on it is zero?
0.49
m to the right of the -2.50 μC charge
(b) What if both charges are positive?
0.185
xm to the right of the 2.50 μC charge
c = ad
Find the electric field at the location of q, in the figure below, given that q₁ = 9₁ = 9₁ = +4.60 nC, q=-1.00 nC, and the square is 20.0 cm on a side. (The +x axis is directed to the right.)
magnitude
direction
N/C
° counterclockwise from the +x-axis
9a
%
9
9b
Chapter 23 Solutions
EP COSMIC PERSPECTIVE-MOD.MASTERING
Ch. 23 - Prob. 1VSCCh. 23 - Prob. 2VSCCh. 23 - Prob. 3VSCCh. 23 - Prob. 4VSCCh. 23 - Prob. 1EAPCh. 23 - Prob. 2EAPCh. 23 - Prob. 3EAPCh. 23 - Prob. 4EAPCh. 23 - Prob. 5EAPCh. 23 - Prob. 6EAP
Ch. 23 - Prob. 7EAPCh. 23 - Prob. 8EAPCh. 23 - Prob. 9EAPCh. 23 - Explain what we mean when we say that a neutrino...Ch. 23 - Prob. 11EAPCh. 23 - Briefly explain why dark matter is thought to have...Ch. 23 - What do the large-scale structures of the universe...Ch. 23 - Prob. 14EAPCh. 23 - Prob. 15EAPCh. 23 - Prob. 16EAPCh. 23 - Prob. 17EAPCh. 23 - Prob. 18EAPCh. 23 - Prob. 19EAPCh. 23 - Prob. 20EAPCh. 23 - Prob. 21EAPCh. 23 - Prob. 22EAPCh. 23 - Prob. 23EAPCh. 23 - Prob. 24EAPCh. 23 - Prob. 25EAPCh. 23 - Prob. 26EAPCh. 23 - Prob. 27EAPCh. 23 - Prob. 28EAPCh. 23 - Prob. 29EAPCh. 23 - Prob. 30EAPCh. 23 - Choose the best answer to each of the following....Ch. 23 - Prob. 32EAPCh. 23 - Prob. 33EAPCh. 23 - Prob. 34EAPCh. 23 - Choose the best answer to each of the following....Ch. 23 - Choose the best answer to each of the following....Ch. 23 - Choose the best answer to each of the following....Ch. 23 - Prob. 38EAPCh. 23 - Prob. 40EAPCh. 23 - Prob. 43EAPCh. 23 - Prob. 44EAPCh. 23 - Prob. 45EAPCh. 23 - Prob. 46EAPCh. 23 - Prob. 47EAPCh. 23 - Prob. 48EAPCh. 23 - Prob. 49EAPCh. 23 - Prob. 50EAPCh. 23 - Prob. 51EAPCh. 23 - Prob. 52EAPCh. 23 - Prob. 53EAPCh. 23 - Prob. 54EAPCh. 23 - Prob. 55EAPCh. 23 - Weighing a Cluster. A cluster of galaxies has a...Ch. 23 - Prob. 57EAPCh. 23 - Prob. 58EAPCh. 23 - Prob. 59EAP
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