Advanced Physics

All new and solved questions in Advanced Physics category

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Gaussian Cube Electric Field
An electric field given by = 6.0· - 3.9(y2 + 3.5)· pierces a Gaussian cube of edge length 3.2 m and positioned as shown in Fig. 23-56. (The magnitude is in newtonsper coulomb and the position x is in meters.) What net charge (in Coulombs) is enclosed by the Gaussian cube?...
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A nonconducting spherical shell
A nonconducting spherical shell, with an inner radius of 4 cm and an outer radius of 6 cm, has charge spread nonuniformly through its volume between its inner andouter surfaces. The volume charge density ? is the charge per unit volume, with the unit coulomb per cubic meter. For this shell ? = b/r w...
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Problem 4
An archer shoots an arrow with a velocity of 30 m/s at an angle of 20 degrees with respect to the horizontal. An assistant standing on the level ground 30 m downrangefrom the launch point throws an apple straight up with the minimum initial speed necessary to meet the path of the arrow. What is the ...
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Homework 4, Item 1
A road race is taking place along the track shown in the figure (Figure 1) . All of the cars are moving at constant speeds. The car at point F is traveling along astraight section of the track, whereas all the other cars are moving along curved segments of the track. Let be the velocity of the car a...
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A charge of +1nC and a dipole with charges +9nC and -9nC separated by .3mm contribute to a net...
A charge of +1nC and a dipole with charges +9nC and -9nC separated by .3mm contribute to a net electric field at location A. A -3 nC charge is placed, at rest, atpoint A. Determine what external electric field is needed in order to keep the -3 nC charge in place. (Note: there is a q+ = +9nC, and q- ...
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Electric field on the axis of a washer
A thin, flat washer is a disk with an outer diameter of 14 cm and a hole in the center with a diameter of 2 cm. The washer has a uniform chargedistribution and a total charge of 8 nC. What is the electric field on the axis of the washer at a distance of 32 cm from the center of the washer?(Enter the...
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Disturbed by speeding cars outside his workplace, Nobel laureate Arthur Holly Compton designed a speed bump (called the "Holly hump") and had it installed. Suppose a 1800-kg car passes over a hump in a roadway that follows the arc of a circle of radius 19.6 m (a) If the car travels at 25.0 k...
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Carnot Engine
A Carnot engine receives 250 kJ s-1 of heat from a heat-source reservoir at 525?C and rejects heat to a heat-sink reservoir at 50?C. What are the power developed andthe heat rejected?...
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The image distance in this case is...?
A lens of focal length 20 cm has an object of height 3.0 cm placed 100 cm in front of it. The imagedistance in this case isA) 17 cm. B) 33 cm. C) -25 cm. D) 20 cm. E) 25 cm.Please show work!...
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HW 6 Item 13
A loudspeaker of mass 22.0{rm kg} is suspended a distance of h = 2.00{rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has alength of l = 3.10{rm m} . What is the tension T in each of the cables?...
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One end of a cord is fixed and a small 0.250-kg object is attached to the other end, where it swings in a section of a vertical circle of radius 1.50 m as shown in thefigure below. When ? = 19.0°, the speed of the object is 7.10 m/s. At this instant, find each of the following. (a) the tension i...
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Lens Image. Will Rate for answer with work and explanation.
An object is placed 100 cm in front of a lens of focal length 50 cm. A lens of focal length -20 cm isplaced 90 cm beyond the first lens. The final image is locatedA) 10 cm past the second lens.B) 20 cm in front of the second lens.C) 20 cm past the second lens.D) 10 cm in front of the second lens.E) ...
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Central Force Problem
A central force potential frequently encountered in nuclear physics is the rectangular well, defined by the potentialV=0 r>a=-Vo r<aShow that the scattering produced by such a potential on classical mechanics is identical with the refraction of light rays by a sphere od radius a and relativein...
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Tension question
An adventurous archaeologist crosses between two rock cliffs by slowly going hand-over-hand along a rope stretched between the cliffs. He stops to rest at themiddle of the rope (Figure 1) . The rope will break if the tension in it exceeds 2.00×104 , and our hero's mass is 83.4 . If the ang...
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Electricity and Magnetism Question
A charge q at the origin is at the back corner of an imaginary cube of edge length a. What is the electric flux through the shaded region? Use direct integration...
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Capacitors
1.)In the figure , each capacitance is 6.3 , and each capacitance is 4.2 . (a)Compute the equivalent capacitance of the network between pointsa and b. (b)Compute the charge on the three capacitors nearest a and b when = 410 .(Q1and Q2) (c)With 410 across a and b, compute ....
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Introduction to Mechanics 5.7 by Kleppner and Kolenkow
When the flattening of the Earth at the poles is taken into account, it is found that the gravitational potential energy of a mass m a distance r from the centerof the earth is approximately U = -GMe/r[1-5.4 x 10-4(Re/r)2(3cos2θ-1)],where θ is measured from the pole.Show that there is a ...
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Gauge transformation , electrodynamics
for a constant uniform electric and magnetic fields E=E0 and B=B0, it is possible to choose a gauge such that the scalar potential φ andvector potential A are given by1 φ=0 , A=1/2(B0xr)2 φ=-E0.r , A=1/2(B0xr)3 φ=-E0.r, A=04 φ=0 ,A=-E0tplease explain the correct answer,here φ...
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5.15 - True/False
In the picture below, the two wires carry current i1 and i2, respectively, with positive current to the right. The charge q ispositive and has velocity v to the right.If i1 = - i2, then the wires repel each other.If v = 0, then the force on q is zero.If i2 = - i1 then the force on q equals zero.If i...
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Electric fields using gauss's law
Electric fields of varying magnitudes are directed either inward or outward at right angles on the faces of a cube, as shown in the figure. What is the strengthand direction of the field on the face F? (The cube does not contain any charges. Take EA = 14 N/C,EB = 22N/C, ED = 22 N/C, and EE = 19 N/C....