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The membrane of the axon of a nerve cell is a thin cylindricalshell of radius r = 10-5 m, length L = 0.09 m, and thickness d = 10-8 m. The membrane has a positive chargeon one side and a negative charge on the other, and acts as aparallel-plate capacitor of area A =2πrL and separation d. Its dielectricconstant is about κ = 7.a) Find the capacitance of the membrane.b) If the potential difference across the membrane is 45 mV, find the charge on each side of the membrane.c) Find the electric field through the membrane.
A string is attached to the center of a solid cylinder. The cylinder sits on a horizontal surface made of concrete and rolls without slipping. find the magnitude of the static friction acting on the cylinder
A point charge q1 = -8.9 μC is located at the center of the thick conducting shell of inner radius a = 2.2 cm and outer radius b = 4.5 cm, the conducting shell has a net charge of q2 = 1.1 μC.
a disk is spinnning at a rate of 10 rad/s. a second disk of the same mass and shape, what is the final angular velocity of the two disks
Red light (n = 1.520) and violet light (n =1.538) traveling in air are incident on a slab of crown glass. Bothcolors enter the glass at the same angle of refraction. The redlight has an angle of incidence of 30.5°. What is the angle ofincidence of th..
Suppose you tart with 250 g of ice at 0 degrees celsius. Calculate the amount of heat energy that must be transferred to convert the ice to steam at 100 degrees celsius
A source delivers an AC voltage of the form change in v = 98.0 sin (80(pi)t), where change in v is in volts and t is in seconds, to a capacitor. Find the frequency of the source
The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.55 m and 1.04 m, respectively. Calculate the speeds of the tips of both rotors
oe, mass MJ = 78.9 kg, is racing against Tom. When Joe and Tom have the same kinetic energy, Tom is running faster. Find Tom's mass in kg
With two fingers, you hold an ice cream cone motionless upside down the mass of the cone is m, and the coefficient of static friction between your fingers and the cone is? When viewed from the side, the angle of the tip is 2?
A 650 kg elevator startsfrom rest and moves upward for 4.30 swith constant acceleration until it reaches its cruising speed,1.84 m/s. What is the average power during an upward cruise with constantspeed
q1. a student drops a penny from the top of a tower and decides that he will establish a coordinate system in which the
Discuss how big is a physical protocol data unit and determine the number of simultaneous transmissions for many network architectures.
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