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A -3.41 nC point charge is located at the center of a conducting spherical shell. The shell has an inner radius of 2 m, an outer radius of 4 m, and a charge of 8.73 nC. What is the magnitude of the electric field at r = 1 m, r = 2 m, r = 3 m? What is the surface charge density on the outside surface of the shell?
An alpha particle of mass m = 6.68×10-27 kg, positive charge q = 2e, and initial kinetic energy K = 9.00 MeV is projected, how close to the center of the nucleus is the particle when it comes momentarily to rest
An object is placed 130 cm in front of a converging lens of focal length 16 cm. What is the distance to the image
A roller coaster (370 kg) moves from A (5.00 m above the ground) to B (25.0 m above the ground). What is the change in the car's kinetic energy
Two cylindrical glass beads each of mass m = 20 mg are set on their flat ends on a horizontal insulating surface separated by a distance d = 8 cm. find the minimum charge needed to start the beads moving
an airplane with a wingspan of 100m flies parallel to the earth's surface at a point where the downward component of the earth's magnetic field is 0.500 x 10^-4 T. what is the reading of the voltmeter
The inner and outer surfaces of a cell membrane carry a negative and a positive charge, respectively. find the magnitude of the electric field in the membrane
question1when two tuning forks are struck simultaneously 9 pulses of increased sound intensity per second are heard.
A 0.20 {rm kg} rock is thrown vertically upward from the top of a cliff that is 31.0 {rm m} high. While it hits the ground at the base of the cliff, the rock has the speed of 31 {rm m/s}. Assume that air resistance can be ignored; find the initial sp..
A worker pushed a 27kg block 7.4m along a level floor at constant speed with a force directed 29° below the horizontal.
A 2 kg mass dropped 2.0 m above a spring with a spring constant of 40.0 N/m. How much does the spring compress
Two astronauts, each having a mass of 79.0 kg, are connected by a 10.5 m rope of negligible mass. Calculate the rotational energy of the system
A 62.0 m length of insulated copper wire is wound to form a solenoid of radius 2.1 cm. The copper wire has a radius of 0.53 mm. How long is the resulting solenoid
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