Several species of bacteria, including Geobacter metallireducens, have been shown to "eat" electrons, bypassing the usual process of metabolizing sugar to obtain energy. During this process, the bacteria, which already have negatively charged cell membranes, acquire an even larger net negative charge, typically between 10.0e and 85.0e in magnitude. Individual Geobacter are typically 4.00 pm in diameter. What are the magnitude and the direction of the electric field of a bacterium with a net negative charge of magnitude 45.0e at a distance of 1.60 mm from the microbe? (a) the magnitude (in N/C) |N/C (b) the direction O radially outward O radially inward What are the magnitude and the direction of the electric force on a second bacterium of net negative charge 50.0e a distance of 1.60 mm from the first bacterium? (c) the magnitude (in N) (d) the direction O away from the first bacterium O towards the first bacterium

Several species of bacteria, including Geobacter metallireducens, have been shown to "eat" electrons, bypassing the usual process of metabolizing sugar to obtain energy. During this process, the bacteria, which already have negatively charged cell membranes, acquire an even larger net negative charge, typically between 10.0e and 85.0e in magnitude. Individual Geobacter are typically 4.00 pm in diameter. What are the magnitude and the direction of the electric field of a bacterium with a net negative charge of magnitude 45.0e at a distance of 1.60 mm from the microbe? (a) the magnitude (in N/C) |N/C (b) the direction O radially outward O radially inward What are the magnitude and the direction of the electric force on a second bacterium of net negative charge 50.0e a distance of 1.60 mm from the first bacterium? (c) the magnitude (in N) (d) the direction O away from the first bacterium O towards the first bacterium

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter23: Electric Fields

Section: Chapter Questions

Problem 23.2P: (a) Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of...

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(a) Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) Imagine adding electrons to the pin until the negative charge has the very large value 1.00 mC. How many electrons are added for every 109 electrons already present?
Is it possible for a conducting sphere of radius 0.10 m to hold a charge of 4.0 C in air? The minimum field required to break down air and turn it into a conductor is 3.0 106 N/C.
A sphere has a net charge of 8.05 nC, and a negatively charged rod has a charge of 6.03 nC. The sphere and rod undergo a process such that 5.00 109 electrons are transferred from the rod to the sphere. What are the charges of the sphere and the rod after this process?
Several species of bacteria, including Geobacter metallireducens, have been shown to "eat" electrons, bypassing the usual process of metabolizing sugar to obtain energy. During this process, the bacteria, which already have negatively charged cell membranes, acquire an even larger net negative charge, typically between 10.0e and 85.0e in magnitude. Individual Geobacter are typically 4.00 µm in diameter. What are the magnitude and the direction of the electric field of a bacterium with a net negative charge of magnitude 30.0eat a distance of 1.00 mm from the microbe? (a)the magnitude (in N/C) _________N/C (b)the direction radially outward radially inward What are the magnitude and the direction of the electric force on a second bacterium of net negative charge 55.0e a distance of 1.00 mm from the first bacterium? (c) the magnitude (in N) ______N (d)the direction away from the first bacterium towards the first bacterium
Flying insects such as bees may accumulate a small positive electric charge as they fly. In one experiment, the mean electric charge of 50 bees was measured to be ++(30 ±± 5) pCpC per bee. Researchers also observed the electrical properties of a plant consisting of a flower atop a long stem. The charge on the stem was measured as a positively charged bee approached, landed, and flew away. Plants are normally electrically neutral, so the measured net electric charge on the stem was zero when the bee was very far away. As the bee approached the flower, a small net positive charge was detected in the stem, even before the bee landed. Once the bee landed, the whole plant became positively charged, and this positive charge remained on the plant after the bee flew away. By creating artificial flowers with various charge values, experimenters found that bees can distinguish between charged and uncharged flowers and may use the positive electric charge left by a previous bee as a cue…
Red blood cells often become charged and can be treated as point charges. Healthy red blood cells are negatively charged, but unhealthy cells (due to the presence of a bacteria, for example) can become positively charged. In the figure, three red blood cells are oriented such that they are located on the corners of an equilateral triangle. The red blood cell charges are A = 2.10 pC, B = 6.90 pC, and C = −3.80 pC. Given these charges, what would the magnitude and direction of the electric field be at cell A? (1 pC = 1 ✕ 10−12 C.) magnitude: __ N/C direction: __ degrees counterclockwise from the +x-axis If the charge of cell A were doubled, how would the electric field at cell A change? The field would be unchanged. The magnitude of the field would be halved. The magnitude of the field would be doubled. The magnitude of the field would be quadrupled.
Consider the following. a) Red blood cells often become charged and can be treated as point charges. Healthy red blood cells are negatively charged, but unhealthy cells (due to the presence of a bacteria, for example) can become positively charged. In the figure, three red blood cells are oriented such that they are located on the corners of an equilateral triangle. The red blood cell charges are A = 2.30 pC, B = 6.90 pC, and C = −4.10 pC. Given these charges, what would the magnitude and direction of the electric field be at cell A? (1 pC = 1 ✕ 10−12 C.) Magnitude: (in N/C) Direction: ° counterclockwise from the +x-axis
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What is the magnitude of the force (in Newtons) exerted on a charge 3.2 mC by an electric field 191.8 N/C that points due east? Your answer should be a number with four decimal places, do not include the unit. Hint: 1mC = 10 3C