Physics: Principles with Applications
7th Edition
ISBN: 9780321625922
Author: Douglas C. Giancoli
Publisher: Addison-Wesley
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Chapter 18, Problem 7Q
What happens when aIightbulb burns out?
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Calculate the axoplasm resistance for a neuron of length 0.06 m and a radius of 5 um. The axoplasm resistivity is 2.0 Ohm.m. Give your answer in MOhms
An unmyelinated segment of the axon has a radius of r=2 pm and a
length of L=7 cm. what is its membrane capacitance (Farad) ?. (The
%3D
capacitance per unit area, Cm = 0.01 F/m2).
%3D
A. 0.000000008792
B. None,
C. 0.00000002638
D. 0.00000003517
E. 0.00000001758
Assume an axon has the same characteristics as the class example
except the radius of the axon is 0.005 mm and the membrane
thickness is 20.0 nm. The percentage fractional change in the
concentration of Na+ ions in the axon during one action potential is
%? Record the answer to the nearest one
thousandth.
Chapter 18 Solutions
Physics: Principles with Applications
Ch. 18 - Prob. 1OQCh. 18 - When an electric cell is connected to a circuit,...Ch. 18 - When a flashlight is operated, what is being used...Ch. 18 - Prob. 3QCh. 18 - Prob. 4QCh. 18 - Prob. 5QCh. 18 - Prob. 6QCh. 18 - What happens when aIightbulb burns out?Ch. 18 - Prob. 8QCh. 18 - Prob. 9Q
Ch. 18 - Prob. 10QCh. 18 - Prob. 11QCh. 18 - Prob. 12QCh. 18 - Prob. 13QCh. 18 - When electric lights are operated on low-frequency...Ch. 18 - Prob. 15QCh. 18 - Prob. 16QCh. 18 - Prob. 17QCh. 18 - Prob. 18QCh. 18 - Prob. 19QCh. 18 - Prob. 20QCh. 18 - Prob. 1MCQCh. 18 - Prob. 2MCQCh. 18 - Prob. 3MCQCh. 18 - Prob. 4MCQCh. 18 - Prob. 5MCQCh. 18 - Prob. 6MCQCh. 18 - Prob. 7MCQCh. 18 - Prob. 8MCQCh. 18 - Prob. 9MCQCh. 18 - Prob. 10MCQCh. 18 - Prob. 11MCQCh. 18 - A current of 1.60 A flows in a wire. How many...Ch. 18 - A service station charges a battery using a...Ch. 18 - Prob. 3PCh. 18 - What is the resistance of a toaster if 120 V...Ch. 18 - Prob. 5PCh. 18 - Prob. 6PCh. 18 - (a) What is the current in the element of an...Ch. 18 - Prob. 8PCh. 18 - Prob. 9PCh. 18 - A 4.5-V battery is connected to a bulb whose...Ch. 18 - Prob. 11PCh. 18 - What is the diameter of a 1.00-m length of...Ch. 18 - What is the resistance of a 5.4-m length of copper...Ch. 18 - Prob. 14PCh. 18 - Prob. 15PCh. 18 - A certain copper wire has a resistance of 15.0 ....Ch. 18 - Compute the voltage drop along a 21-m length of...Ch. 18 - Two aluminum wires have the same resistance. If...Ch. 18 - Prob. 19PCh. 18 - Prob. 20PCh. 18 - Prob. 21PCh. 18 - Prob. 22PCh. 18 - Prob. 23PCh. 18 - Prob. 24PCh. 18 - Prob. 25PCh. 18 - A 10.0-m length of wire consists of 5.0 m of...Ch. 18 - What is the maximum power consumption of a 3.0-V...Ch. 18 - The heating element of an electric oven is...Ch. 18 - What is the maximum voltage that can be applied...Ch. 18 - Prob. 30PCh. 18 - Prob. 31PCh. 18 - Prob. 32PCh. 18 - A 120-V hair dryer has two settings: 950 W and...Ch. 18 - Prob. 34PCh. 18 - Prob. 35PCh. 18 - Prob. 36PCh. 18 - Prob. 37PCh. 18 - Prob. 38PCh. 18 - Prob. 39PCh. 18 - Prob. 40PCh. 18 - Prob. 41PCh. 18 - Prob. 42PCh. 18 - Prob. 43PCh. 18 - Prob. 44PCh. 18 - Prob. 45PCh. 18 - The current in an electromagnet connected to a...Ch. 18 - Prob. 47PCh. 18 - Prob. 48PCh. 18 - Prob. 49PCh. 18 - Prob. 50PCh. 18 - Prob. 51PCh. 18 - Prob. 52PCh. 18 - Determine (a) the maximum instantaneous power...Ch. 18 - Prob. 54PCh. 18 - Prob. 55PCh. 18 - A 4.80-m length of 2.0-mm-diameter wire carries a...Ch. 18 - Prob. 57PCh. 18 - Prob. 58PCh. 18 - Prob. 59PCh. 18 - Prob. 60PCh. 18 - Prob. 61GPCh. 18 - Prob. 62GPCh. 18 - Prob. 63GPCh. 18 - Prob. 64GPCh. 18 - Prob. 65GPCh. 18 - Prob. 66GPCh. 18 - A small city requires about 15 MW of power Suppose...Ch. 18 - Prob. 68GPCh. 18 - Prob. 69GPCh. 18 - Prob. 70GPCh. 18 - Prob. 71GPCh. 18 - Prob. 72GPCh. 18 - Prob. 73GPCh. 18 - V is applied to two different conductors made of...Ch. 18 - Prob. 75GPCh. 18 - Prob. 76GPCh. 18 - Prob. 77GPCh. 18 - A 15 2-?resistor is made from a coil of copper...Ch. 18 - Prob. 79GPCh. 18 - Prob. 80GPCh. 18 - Prob. 81GPCh. 18 - Prob. 82GPCh. 18 - Prob. 83GPCh. 18 - Prob. 84GPCh. 18 - Prob. 85GPCh. 18 - If a wire of resistance R is stretched uniformly...Ch. 18 - Prob. 87GPCh. 18 - Prob. 88GPCh. 18 - Prob. 89GPCh. 18 - Prob. 90GPCh. 18 - Prob. 91GP
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- An unmyelinated segment of the axon has a radius of r-2 um and a length of L=5 cm. what is its membrane capacitance (Farad) ?. (The capacitance per unit area, C = 0.01 F/m?). A. 0.00000000628 B. 0.00000002512 C. 0.00000001884 D. 0.00000001256 E. Nonearrow_forwardWhat is the resistance of the of an axon’s axoplasm segment with a length of 1 mm (enter your answer in units of M Ω)?arrow_forwardScussion:- 1. Sketch Vo and determine Vac, Vrm.s . 100 V Mas L7 AQ 56 ka 本arrow_forward
- What is the resistance of a 2.0 - mm long axon?arrow_forward12. (a) Using Eq. AQ=CAV and the data in the Table, calculate the number of ions entering the axon during the action potential, per meter of nonmyelinated axon length. (The charge on the ion is 1.6 x 10-19 coulomb.) (b) During the resting state of the axon, typical concentrations of sodium and potassium ions inside the axon are 15 and 150 millimole/liter, respectively. From the data in the Table, calculate the number of ions per meter length of the axon. Table 13.1 Properties of Sample Axons Hint: 1 F (farad) = 1coulomb/1 volt Property Nonmyelinated axon Myelinated axon Axon radius 5 x 10-m 5 x 10-6 m 1 mole /liter = 6.02 x 1020 particles (ions, atoms, etc. ) Resistance per unit length of fluid cm 6.37 x 10°2/m 6.37 x 10°2/m both inside and outside axon (r) Conductivity per unit length of axon membrane (gm) 1.25 x 10-4 mho/m In the resting state, the axon voltage is -70mV. During the pulse, the voltage changes to about +30mV, resulting in a net voltage change across the membrane of 100…arrow_forwardMidterm Test (13 ye 3 elearn.squ.edu.om/mod/quiz/attempt.php?attempt3D1828960&cmid= SQU E-LEARNING SYSTEM الوفت المتبقی 14:30:۔ Two resistors are made out of the same material but have different dimensions, as shown in the figures. The current through these two resistors is in the directions shown. What is the ratio of the resistances of ? the two wires RA/RB LL 2L 2L 2L (B (A) 1/4 a O 8 b 0 بال لبحث hparrow_forward
- The velocity of spike propagation is proportional to the following combination of factors: 1 a C, V R„R, m Where a is the radius of the axon, Rm and R; are specific resistances of the membrane and the internal buffer, respectively. If we double the radius and simultaneously increase the concentration of salt inside the axon twice (i.e. R; decreases two times), by how many fold will the velocity change?arrow_forwardQuestion 7 50 40 40 Peak action potential Depolarization Repolarization 0.2/0.5 points Membrane potential (mV) 0 - Threshold of excitation -50 Initial stimulus -70 resting hyperpolarization resting return to resting -100 When are voltage gated Na+ channels closed (and inactivated)? The different ranges provided start at resting, go through an AP, and end at resting. (-70mV to -50mV) (-50mV to +40mV) (+40mV to -70mV) (-70mV to -80mV) (-80mV to -70mV)arrow_forwardA solar cell, 3.0 cm square, has an output of 350 mA at0.80 V when exposed to full sunlight. A solar panel thatdelivers close to 1.3 A of current at an emf of 120 V to anexternal load is needed. How many cells will you need tocreate the panel? How big a panel will you need, and howshould you connect the cells to one another?arrow_forward
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