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Consider a wire which is uniformly charged with charge density λ. Find what is the electric field everywhere using Gauss Law.
A moving 3.10 kg block collides with a horizontal spring whose spring constant is 392 N/m. What is the speed of the block when it hits the spring
a proton has a speed 4.5*10^5 m/s at a point where electrical potential is 900V. it moves through a point where the electric potential is 500V. find the kenetic energy of proton at first point
A small steel ball bearing with a mass of 17g is on a short compressed spring. When aimed vertically and suddenly free, spring sends the bearing to a height of 1.33 m. compute the horizontal distance ball would travel if the same spring were aimed..
A certain elevator cab has a total run of 190 m and a maximum speed of 305 m/min, and it accelerates from rest and then back to rest at 1.22 m/s2. How long does it take to make the nonstop 190 m run, starting and ending at rest
Four identical springs are used as part of a car's suspension system, one on each wheel. What will be the frequency at which the car will bounce
A stunt pilot performs a circular dive of radius 715m. At the bottom of the dive pilot has a speed of 265 m/s which at that instant is increasing at a rate of 15 m/s2(along the direction of vector B) What total acceleration does the pilot have at ..
A parallel-plate air capacitor has a capacitance of 400pF and a charge of magnitude 0.150\muC on each plate. What is the surface charge density on each plate
a hair dryer has a power rating of 12000w at 120v rms. assume that the hair dryer is the only resistance in the
The rotor of an electric motor has rotational inertia Im = 5.12 x 10-3 kg·m2 about its central axis.Calculate the number of revolutions of the rotor required to turn the probe through 31.3° about its central axis
An airplane pulls a 24 kg banner on a cable as depicted in the figure below. When the plane has a constant cruising velocity the cable makes an angle of ? = 26°. What is the drag force exerted on the banner by the air
An inductor in the form of a solenoid contains 380 turns and is 15.8 cm in length. What is the radius of the solenoid
A radar station locates a sinking ship at range 17.5 km and bearing 136° clockwise from north. How far apart are the plane and ship
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