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For a charged hollow metal sphere with total charge Q and radius R centered on the origin: Select "True"or "False" for each statement.
The field in the hollow of the shell is not zero.There is zero net charge on the outside surface.The fieldfor r >> R will be thesame as the field of a point charge, Q, at the origin.The electric field is zero just inside the metal.The E-field near the outside surface is normal to the surface.The total charge is on the outside surface.
Which of the following devices use a diffraction grating in order to function?
A 160-lb gymnast is executing a series of full-circle swings on the horizontal bar. determine his angular velocity and the force exerted on his hands
1) What is the velocity of the water in the hose ?
In an L-R-C series circuit, the resistance is 420 ohms, the inductance is 0.340 henrys, and the capacitance is 1.80×10?2 microfarads. What is the resonance angular frequency of the circuit
An engine draws energy from a hot reservoir with a temperature of 1250 K and exhausts energy into a cold reservoir with a temperature of 355 K. What is the power output of this engine
three electrons are located at the vertices of an equilateral triangle, one at each vertex. what is the magnitude of the net electrostatic force on each electron
The positron is a particle with the same mass as an electron but charge +e. what's the radius of its trajectory in the bubble chamber
A wrench is used to tighten a nut. A force of 15 N is applied a distance 8.0 cm from the axis of rotation of the nut; the lever arm is 8.0 cm long
A sample containing carbon, oxygen, and an unknown element isplaced in a mass spectrometer. What is the mass of the unknown element
A mechanic turns a wrench using a force of 30 N at a distance of 18 cm from the rotation axis. What magnitude torque does she apply to the wrench
Consider a circuit consisting of a lightbulb and a capacitor. Part A:If the frequency of the generator is increased, does the intensity of the lightbulb increase, decrease, or stay the same? Part B:Choose the bestexplanation from among the following:
A ball with a mass of 0.5kg and a diameter of 0.4 m floats (so acceleration =0 ) in the ocean, what is the buoyant force of the ball
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