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The electric field everywhere on the surface of a thinspherical shell of radius 0.720 m is measured to be equal to 890 N/C andpoints radially toward the center of the sphere.
(a) What is the net charge with in the sphere'ssurface?
nC
Two charged objects experience a mutual repulsive force of 0.71 N. If the charge of one of the objects is reduced by half and the distance separating the objects is quadrupled, what is the new force? (Enter the magnitude of the force.)
Sam's job at the amusement park is to slow down and bring to a stop the boats in the log ride. how much work does Sam do to stop it
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
A 88 g cube of ice at 0°C is dropped into 1.0 kg of water that was originally at 76°C. What is the final temperature of the water after the ice has melted
You have a set of converging lenses with focal lengths 1.05 cm, 14.5 cm, 48.0 cm, and 74.5 cm. find the distance between the objective and eyepiece
With brakes fully applied, a 1430kg car decelerates from a speed of 74km/hr. What is the work done by the braking force in bringing car to a stop.
In the amusement park ride known as Magic Mountain Superman, powerful magnets accelerate a car and its riders from rest to 45.9 m/s in a time of 8.93 s. Find the average net force exerted on the car and riders by the magnets
Workers are dragging a 610kg block up a dirt ramp that isinclined at 13o above the horizontal. They are exertinga 5600-N force parallel to the ramp. The block is accelerating at0.49 m/s2
Three moles of nitrogen gas,N2, at 31.0°C arecontained in a 19.5 L cylinder. Find the pressure the gas exerts on the cylinder walls
Could you help with this one, The Tesla Roadster, a production electric car, has a 375 battery system that can provide a power of 200. what is the current supplied by the batteries
In an internal combustion engine, air at atmospheric pressure and a temperature of about 20 ?C is compressed in the cylinder by a piston to 18.0 of its original volume, Estimate the temperature of the compressed air
A sample of 2.3×1010 atoms that decay by alpha emission has a half-life of 150 min. How many alpha particles are emitted between t=30 min and t=160 min
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