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A 3.18-nF parallel-plate capacitor is charged to an initial potential difference ?Vi = 100 V and is then isolated. The dielectric material between the plates is porcelain, with a dielectric constant of 6.
(a) How much work is required to withdraw the porcelain sheet?
(b) What is the potential difference of the capacitor after the porcelain is withdrawn?
A 1500 kg car traveling at a speed of 20 m/s skids to a halt on wet concrete where kinetic friction= 0.20. How far are the skid marks.
The difference in electric potential between a thunder cloud and the ground is 1.58 108 V, Determine the change in electric potential energy of one of the electrons that move to the cloud
Use approximate calculations assuming constant current during the output pulse. Calculate the ampere-hour rating of the battery so it lasts for five years.
A stone is shown at rest on ground. at. The vector shows the weight of the stone. Complete vector diagram showng another tha results in zero net force on the stone. b. What is the conventional name of the vector you have drawn.
Given the standard molar volume of gas is 22.71 L/mol at a temp of 273.15K and a pressure of 1 bar, what is the value of the ideal gas constant
A fan blade rotates with angular velocity given by ?z(t)= ? ? ? t2, where ? = 5.45rad/s and? = 0.835 rad/s3. Calculate the angular acceleration as a function of time
His arm is 70 cm long and has a mass of 4.0 kg. Illustrate what is the magnitude of the torque about his shoulder if he holds his arm straight out to his side, parallel to the floor?
You are trying to overhear a juicy conversation, but from your distance of 15m. It sounds like only an average whisper of 20 dB. So you decide to move closer to give the conversation a sound level of 60 dB instead. How close must you come.
If the length of the field between goal lines in the Earth frame is 85.2 m, what length is measured in the rest frame of the particle
An ion harvester is scouring deep space for isolated xenon (Xe+) ions. A xenon ion is singly ionized and has the charge of +e. If the field meter reads 0.000000202 N/C, how far away is it from the ion.
If the index of refractions of the red light is 1.4925, what is the index of refraction of the blue light?
A cart of mass m = 1.4 kg is released from the top of a ramp sloped ? = 13° relative to the horizontal. The length of the ramp is L =9.6 m. find the car's Kinetic Energy at the bottom of the ramp
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