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Solve the following questions:
Question I: How many excess electrons must be distributed uniformly within the volume of an isolated plastic sphere 24.0cm in diameter to produce an electric field of 1200N/C just outside the surface of the sphere?
Question II: What is the electric field at a point 12.0cm outside the surface of the sphere?
I am having a hard time understanding these questions. So if you answer please explain how you found the answers.
A ball rolls horizontally off the edge of a tabletop that is 1.20 m high. It strikes the floor at a point 1.63 m horizontally away from the table edge. What was its speed at the instant it left the table
light of wavelength 612 nm in a vacuum travels 1.57 pm in a medium of index of refraction 1.51. finda the wavelength in
the company you work for and you love this job and want to keep it needs reliable information on the speed of its
A computer monitor accelerates electrons and directs them to thescreen in order to create an image. If the acceleratingplates are 1.05 cm apart, and have a potential differenceof 2.00×104 V, find the change in electricpotential energy for any elect..
what is the total amount of work done by friction. The supplies should be dropped how various seconds before the plane is directly overhead.
The K^0 particle has a mass of 497.7 MeV/c2. It decays into a p- and p+, each having mass 139.6 MeV/c2. Determine the kinetic energy of the other pion after the decay
A projectile is launched from the ground at t=0 with an initial launch speed of v0 m/s at and angle of degree above the horizontal. at t = 3 sec, the project its reaches its highest point. At t = 4 sec, the projectile lands on the top edge of edge of..
What is the rms current in an RC circuit if R = 29.1 k?, C = 0.820 µF, and the rms applied voltage is 120 V at 60.0 Hz? (in A) A: 9.27×10-4 B: 1.34×10-3 C: 1.95×10-3 D: 2.83×10-3 E: 4.10×10-3 What is the phase angle between voltage and current? (in d..
A 70.0cm wire of mass 8.20g is tied at both ends and adjusted to a tension of 41.0N. When it is vibrating in its second overtone, find the frequency at which it is vibrating
A 16.0-? resistor, a 12.0-µF capacitor, and a 17.0-mH inductor are connected in series with a 170-V generator. What is the maximum value of the rms current?
Two hockey players strike a puck of mass 0.158 kg with their sticks simultaneously, exerting forces of 1.17 103 N, directed west, and 9.90 102 N, Find the instantaneous acceleration of the puck
A solar collector is placed in direct sunlight where it absorbs energy at the rate of 880 J/s for each square meter of its surface. What equilibrium temperature does the collector reach
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