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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 and outer surfaces. The volume charge density ? is the charge per unit volume, with the unit coulomb per cubic meter. For this shell ? = b/r where r is the distance in meters from the center of the shell and b = 3 ? C/m2. What is the net charge in the shell?
an electron in a hydrogen makes a transition between levels and emits a photon with a frequency of 6.91*10^14 hz . find is the electron jumping to higher or lower level
You throw a 21.6 N rock vertically into the air from ground level. You observe that when it is a height 14.4m above the ground, What is its speed just as it left the ground
Dirk pushes on a packing box with a horizontal force of 52.0 N as he slides it along the floor. How much total work is done on the box in moving it 3.20 m along the floor
Compute approximately the time the ball is in contact with the floor to be 0.04 seconds. Compute the average force the floor exerts on the ball.
The length of a string is 322 cm. It is held fixed at each end. The string vibrates in seven sections; such as the string has seven antinodes, and the string vibrates at 160 Hz.
A coffee filter of mass 1.2 grams dropped from a height of 3 m reaches the ground with a speed of 0.7 m/s. How much kinetic energy Kair did air molecules gain from the falling coffee filter.
An object 2.6 cm high is placed 15 cm from the surface of a polished silver sphere of radius 11 cm. Find the location, size, and orientation of the image
Calcualte the radiation dosage (in rads) for a 67-kg person that is exposed to 6.0 seconds to a 3.0 Ci source of beta radiation.
A pendulum consists of a 4.0 kg stone swinging on a 4.4 m string of negligible mass. The stone has a speed of 7.5 m/s when it passes its lowest point. what is the total mechanical energy of the system
A rat with an emissivity of .40, total area of .15m^2 and a temperature of 37C. How much energy must the rat's body generate to maintain a skin surface of 37C in a 24 hour period
Imagine that hard determinism is true. Would there be any justification for punishment? Why or why not?
Suppose V rms = 240 V for an alternating current power source. What is the amplitude of the voltage for the source
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