A cell membrane can be modeled as a capacitor. The thickness of membrane is 7.0 nm Part A How much energy is stored in a 16-um-diameter spherical cell that has membrane potential of -90 m V? Express your answer with the appropriate units. U = Submit Part B O NATP = HA Submit Value Units X Incorrect; Try Again; 5 attempts remaining Previous Answers Request Answer For comparison, how many ATP molecules need to undergo hydrolysis to generate this much energy? In a cell, the energy rele from the hydrolysis of ATP is approximately 60 kJ/mol 1951 ΑΣΦ ? Previous Answers Request Answer I x Incorrect; Try Again; 4 attempts remaining ?

A cell membrane can be modeled as a capacitor. The thickness of membrane is 7.0 nm Part A How much energy is stored in a 16-um-diameter spherical cell that has membrane potential of -90 m V? Express your answer with the appropriate units. U = Submit Part B O NATP = HA Submit Value Units X Incorrect; Try Again; 5 attempts remaining Previous Answers Request Answer For comparison, how many ATP molecules need to undergo hydrolysis to generate this much energy? In a cell, the energy rele from the hydrolysis of ATP is approximately 60 kJ/mol 1951 ΑΣΦ ? Previous Answers Request Answer I x Incorrect; Try Again; 4 attempts remaining ?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter26: Electric Potential

Section: Chapter Questions

Problem 45PQ: The charge density on a disk of radius R = 12.0 cm is given by = ar, with a = 1.40 C/m3 and r...

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In a certain region of space, the electric field is zero. From this fact, what can you conclude about the electric potential in this region? (a) It is zero, (b) It does not vary with position. (c) It is positive. (d) It is negative. (e) None of those answers is necessarily true.
Given the arrangement of capacitors in Figure P27.23, find an expression for the equivalent capacitance between points a and b. Figure P27.23 Problems 23 and 24.
An arrangement of capacitors is shown in Figure P27.23. a. If C = 9.70 105 F, what is the equivalent capacitance between points a and b? b. A battery with a potential difference of 12.00 V is connected to a capacitor with the equivalent capacitance. What is the energy stored by this capacitor? Figure P27.23 Problems 23 and 24.
Rank the potential energies of the four systems of particles shown in Figure CQ16.4 from largest to smallest. Include equalities if appropriate. Figure CQ16.4
The charge density on a disk of radius R = 12.0 cm is given by = ar, with a = 1.40 C/m3 and r measured radially outward from the origin (Fig. P26.45). What is the electric potential at point A, a distance of 40.0 cm above the disk? Hint: You will need to integrate the nonuniform charge density to find the electric potential. You will find a table of integrals helpful for performing the integration.
An electric potential exists in a region of space such that V = 8x4 2y2 + 9z3 and V is in units of volts, when x, y, and z are in meters. a. Find an expression for the electric field as a function of position. b. What is the electric field at (2.0 m, 4.5 m, 2.0 m)?
(a) Find the equivalent capacitance between points a and b for the group of capacitors connected as shown in Figure P16.46 if C1 = 5.00 F, C2 = 10.00 F, and C3 = 2.00 F. (b) If the potential between points a and b is 60.0 V, what charge is stored on C5? Figure P16.46
A Consider a thin rod of total charge Q and length L (Fig. P26.43). Show that the electric potential at point P, a distance x from the end of the rod, is given by V(x)=kQLln(x+Lx) FIGURE P26.43 Problems 43 and 54.
Why do we need to be careful about work done on the system versus work done by the system in calculations?
(a) Calculate the electric potential 0.250 cm from ail electron, (b) What is the electric potential difference between two points that are 0.250 cm and 0.750 cm from an electron? (c) How would the answers change if the electron were replaced with a proton?
Find the charge on each of the capacitors in Figure P16.43. Figure P16.43
(a) Find the equivalent capacitance between points a and b for the group of capacitors connected as shown in Figure P20.44. Take C1 = 5.00 F, C2 = 10.0 F, and C3 = 2.00 F. (b) What charge is stored on C3 if the potential difference between points a and b is 60.0 V? Figure P20.44