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A parallel-plate capacitor has a plate separation of 5.0 cm. Ifthepotential difference between the plates is 2000 V, with the top plate at the higherpotential, what is the electric field between the plates?
A particle whose mass is 6.0 grams and whose charge is 5 nC is released from rest when it is 20 cm from a second particle of charge 8 C. Find the magnitude of the particle's initial acceleration
A hollow sphere of radius 0.50 m, with rotational inertia I = 0.038 kg m2 about a linethrough its center of mass, rolls without slipping up a surfaceinclined at 40° to the horizontal. Ata certain initial position, the sphere's total kinetic energy ..
A 300 gram block is attached to a light horizontal spring. Find how far beyond its equilibrium position will the spring stretch at its first maximum extension if the coefficient of kinetic friction of the table surface is 0.20
How long did it take the apple to hit Newton after falling off? Draw a graph of velocity vs
Just by the impact, the clay has speed v0 = 9 m/s, and the disk is rotating clockwise with angular speed w0 = 0.4 rad/s. Just following the impact, what is an angular speed of the combined system of wheel plus clay.
Use Ampere's Law to find the magnetic field inside of a long straight cylinder of current with current density J. Remember that J = I/A
A velocity selector has a magnetic field of magnitude .38Tperpendicular to an electric field of magnitude .54 MV/m. The massof a proton is 1.67 X 10^-27 kg. How much energy must protons haevin order to pass through undeflected.
In Europe, surveyors often measure angles in grads. There are 100 grads in one-quarter of a circle. How many grads are there in 2.16 radians
A helicopter has two blades, each of which has a mass of 270 kg and can be approximated as a thin rod of length 6.7 m. The blades are rotating at an angular speed of 54 rad/s. (a) What is the total moment of inertia of the two blades about the axis o..
A 1.00-µF capacitor is connected to a 18.0-V battery. How much energy is stored in the capacitor
An ice sheet with area 10:0 m x 10:0 m and uniform thickness of 1.20 m floats in the Arctic Ocean. Assume that the density of ice is 917 kg/m3, Find the buoyant force acting on the ice sheet
A concert loudspeaker suspended high off the ground emits 42 W of sound power. A small microphone with a 1.0 cm2 area is 43 m from the speaker. (a) What is the sound intensity at the position of the microphone
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