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Two equally charged insulating balls each weigh 0.22 g and hang from a common point by identical threads 25 cm long. The balls repel each other so that the separation among their centers is 6.0 cm. What is the magnitude of the charge on each ball?
A fan at a rock concert is 35m from the stage, where sound intensity level is 125 dB. Her eardrums have a diameter of 8.07mm. How much energy is transferred to each eardrum in one second? (Distance from the speaker to the edge of the stage is 1 m...
A 0.58-kg mass is hanging from a spring with spring constant 20 N/m. Then the mass is displaced from the equilibrium by 2.9 cm and let go. estimate the resulting angular frequency of the oscillation
A 74 kg man in a 6.0 kg chair tilts back so that all the weight isbalanced on two legs of the chair. find the pressure exerted by each leg on the floor
The primary coil of a step-up transformer is connected across the therminals of a standard wall socket, and resistor 1 with a resistance R1 is connected across the secondary coil. The current in the resistor is then measured.
A rubber ball with a radius of 3.2 cm rolls along the horizontal surface of a table with constant linear speed v. When the ball rolls off the edge of the table, it falls 0.66 m to thefloor below. If the ball completes 0.37 revolution during its fall,..
Determine the enthalpy change and internal energy change of ammonia in J/mole, as it is heated from 350 K to 600 K, using the ideal gas heat capacity given by the Shomate Equation.
A battery has an emf of 7.5 V and 16 A of current flows through it. What power is this battery supplying
Alan leaves Los Angeles at 8:00 a.m. to drive to San Francisco, 400 mi away. He travels at a steady 47.0mph. How long does the first to arrive have to wait for the second
a pair of eyeglass frames are made of an epoxy plastic coefficient of linear expansion 1.30 10-4degc-1. at room
q1. find flux due to a point charge q on a rectangle of sides l x b at a distance r from the charge along the center of
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
The air in the interior of the submarine is at 1 atmosphere pressure. Chuck tries to push the hatch open, How much force must Chuck apply to push the hatch open
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