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(i) Explain physically how one can use Gauss's Law to find the electric field of a long (infinite) charged wire? (ii) Now do the same for a finite charged wire, explain why you can still use Gauss'
So why don't the electric fields for the infinite line and infinite sheet of charge also fall off in the same way? Hint: As the Gaussian surface gets very far from the source charge, look at what its
What is the change in entropy of the confined gas? (Provide first an algebraic expression and then a complete numerical evaluation)
The net force acting on a 6.0-kg object is given by Fx = (10- x) N, where Fx is in newtons and x is in meters. How much work is done on the object as it moves from x =0 to x=10m ?
An automobile delivers 30.0 hp to its wheels when moving at a constant speed of 22.0 m/s. What is the resistance force on the automobile at this speed? (1 hp=746 watts)
A very light cart holding a 300-N box is moved at constant velocity across a 15m level surface. What is the net work done in the process?
A 1200 kg automobile moving at 25 m/s has it brakes applied with a deceleration of 8.0 m/s^2. How far does the car travel before it stops?
A horizontal force of 200N is applied to a 55-kg cart across a 10m level surface. If the cart accelerates at 2.0 m/s^2, then what is the work done by the force of friction as it acts to retard the
A football punter accelerates a football from rest to a speed of 8 m/s during the time in which his toe is in contact with the ball (about 0.23 s). If the football has a mass of 0.50 kg, what avera
A stone thrown horizontally from a height of 6.32 m hits the ground at a distance of 13.90 m. Calculate the initial speed of the stone. Neglect air resistance.
Is the owl lucky enough to have the mouse hit the nest? To answer this question, calculate the horizontal position of the mouse when it has fallen 12.0 m.
Explain your answers to B and C above in terms of Newton's Third Law and the impulse momentum theorem.
A cylinder conductor with radius 2R and length L carries a uniformly distributed net charge Q. This conductor is surrounded by a concentric cylindrical shell with inner radius 2R and outter radius
Find an expression for the classical turning points of a quantum harmonic oscillator.
A ball is thrown horizontally from the top of a building that is 15.67 m high with a speed of 23.47 m/s. Neglecting air resistance, at what angle with respect to the horizontal will the ball strike
The Stanford Linear Accelerator accelerated a beam consisting of 1.2 1014 electrons per second through a potential difference of 4.0 1010 V. (When entering units, use ohm for ?) (a) Calculate the
A 15 ohm toaster, a 12 ohm clothes iron, and a 320 ohm lamp are turned on simultaneously in parallel on a typical 110 V household circuit. Calculate the total current flowing in this circuit.
An electron moving at 1.50 x 10^6 m/s in a direction perpendicular to a uniform magnetic field travels in a circular arc of radius 0.250 m. What is the strength of the magnetic field?
Cylindrical conductor with radius R and length L carries a uniformly distributed net charge Q. This conductor is surrounded by a concentric cylinder shell with inner radius 4R and outer raidus 6R c
A 0.107-kg ball is dropped from a height of 1.03 m and lands on a light (approximately massless) cup mounted on top of a light, vertical spring initially at its equilibrium position. The maximum com
1) Find the solid angle subtended by a f/1 lens at a point source located at its focus. 2) Find the radian intensity of a Lambertian emitter that radiates 1.00 W
A 3.77-kg ball of clay is thrown downward from a height of 3.47 m with a speed of 4.81 m/s onto a spring with k = 1690 N/m. The clay compresses the spring a certain maximum amount before momentaril
A 2.55-kg model rocket is launched vertically upward with sufficient initial speed to reach a height of 2.83·102 m, even though air resistance (a nonconservative force) performs -6.39·10