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A capacitor is formed from a hollow copper sphere of outer radius 45.4 cm and inner radius 36.3 cm. Compute the capacitance of the sphere in microfarads.
An electron is moving east in a uniform electric field of 1.47N/C directed to the west. At point A, the velocity of the electron is 4.51×105m/s pointed toward the east. What is the speed of the electron when it reaches point B, which is a distance of..
A 310kg wooden raft floats on a lake. When a 75kg man stands on the raft, it sinks 3.20cm deeper into the water. When he steps off, the raft vibrates for a while.
A block with mass of 4 kilogram is compressed a distance d against a spring with a spring contrast of 250 N/m. Calculate by what amount was the spring initially compressed
If the player hears the sound of the splash 3.19 s later, illustrate what was the initial speed given to the rock? Assume the speed of sound in air to be 343 m/s.
An elevator has a mass of 1170kg and carries a maximum load of 786 kg. A constant frictionalforce of 4260 N retards its motion upward. The accelerationof gravity is 9.8 m/s2. What power must the motor deliver at a instantaneous speed of 3.36 m/s i..
A car of mass m = 1410 kilogram is pushed off a cliff of height h = 23 meter. obtain the kinetic energy of the car the instant after it left the cliff
A 1.0- kg mass is attached to a string wrapped around a shaft of negligible mass and having a 5.0- cm radius. How far apart are the masses of the dumbbell
A three level laser has energy levels E 1=1.50 eV, E 2=2.50 eV, and E 3=3.50 eV. Level E 2 is the metastable state. What is the lasing wavelength
A playground merry-go-round has a disk-shaped platform that rotates with negligible friction about a vertical axis. how fast will the disk be turning
Local noon at 0o longitude corresponds to 12:00UTC. a) Given that our longitude is 84o 28' 33'' W, what is our local noontime in UTC? (b) What local time would this correspond to today? (c) From this and your estimate of the sun's current hour angle,..
There is a beam that weighs 1500 kilograms and is twenty meters in length. It has a 15000 kilogram mass on the right side, five meters from the center of gravity. obtain the net tension of each brace that is holding up the beam on both sides.
q1. a heavy piece of hanging sculpture is suspended by a 146.0 cm long 8.03 gm wire. when the wind blows hard the wire
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