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An axon is the relatively long tail-like part of a neuron, ornerve cell. The outer surface of the axon membrane (dielectricconstant = 5, thickness = 1.17 x 10-8 m) is charged positively, and the inner portion is charged negatively. Thus, the membrane is a kind of capacitor. Assuming that an axon can betreated like a parallel plate capacitor with a plate area of 6.63 x10-6 m2, what is its capacitance?
You push a 2.7 kg box with a force of 23.8 N along a level floor, but a frictional force of 3.3 N opposes the motion
A 0.03 kg bullet hits asteel plate and melts and splatters on impact. Assuming thatthe bullet recieves 80% of the collision energy, at what minimium speed must it travel to melt on impact?
You are given a slide with two slits cut into it and asked how far apart the slits are. You shine white light on the slide, What is the separation of the two slits
An object is placed to the left of a convex lens and on the optical axis. What is the magnification of the image formed by the lens
The skis have a thrust of 190 . Sam's speed at the bottom is 35.0 . Illustrate what is the coefficient of kinetic friction of his skis on snow?
A pulley with a radius of 10.0 cm is mounted on an axle that passes through the center of the pulley. calculate the number of revolutions the pulley has made
A physics book is thrown horizontally 20m/s out of a 5m high window. How far horizontally did the student throw the book
A cylindrically shaped piece of collagen is being stretched by a force that increases from 0 to 3.0 x 10^-2 N. How much work is done by the variable force that stretches the collagen
An 8.5 x 11cm sheet of metal is illuminated by a light source located 1.3m directly above it. What is the luminous flux falling on the metal if the source has an intensity of 200cd? What is the total luminous flux emitted by the light source?
What is the electric field at 9.4 cm from the central axis. What is the overall magnification of microscope.
A 1.00-kg glider attached to a spring with a force constant 25.0 N/m oscillates on a frictionless, horizontal air track. Find the period of the glider's motion
A parallel-plate capacitor is charged to an electric potential of 285 V by moving 3.20×10^16 electrons from one plate to the other
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