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A transformer on the Hydro One grid has a primary current of 20.0 A. The current in the secondary coil is 5.00 A and the secondary voltage is 125 kV. Determine the input power, in kW.
How many electrons have been removed or protons added? What is the magnitude of the force between the spheres?
A 1 200-N uniform boom at f 5 65° to the horizon- tal is supported by a cable at an angle u 5 25.0° to the horizontal, calculate the tension in the support cable
Radio astronomers detect electromagnetic radiation at 40.0MHz from an interstellar gas cloud. What is the magnetic field strength inside the gas cloud
A wedding ring (of diameter 1.7 cm) is tossed into the air and given a spin, resulting in an angular velocity of 12 rotations per second. The rotation axis is a diameter of the ring. Taking the magnitude of the Earth's magnetic field to be 4.3 10-5 T..
Four point charges have the same magnitude of 2.36 10-12 C and are fixed to the corners of a square that is 3.65 cm on a side. Three of the charges are positive and one is negative. Decide the magnitude of the net electric field that exists at the ce..
A solid spherical ball of mass 1.44 kg and radius 0.11 m rolls along a smooth, level surface with a speed of 2 m/s. How far up the plane does the ball go
A large man sits on a four-legged chair with his feet off the floor. The combined mass of the man and chair is 95.0 kg. what pressure does each leg exert on the floor
1.an aluminum sphere is 5.50 cm in radius. what is its volume expansion coefficient if it increases in volume 2.00 cm3
Find the gravitational pull between earth and the moon. Given, mass of earth = 5.97 * 10^24 kg, mass of moon = 7.35 8 10 kg,
The (kinetic) energy of a photon is 10 eV. An electron has the same de Broglie wavelength as the wavelength of the photon. What is the electron's kinetic energy
A commuter train passes a passenger platform at a constant speed of 39.9 m/s. The train horn is sounded at its characteristic frequency of 320 Hertz. Find what wavelength is detected by a person on the platform as the train approaches
The electric field at a distance of 0.154m from the surface of a solid insulating sphere with radius 0.372m is 1790N/C. Calculate the electric field inside the sphere at a distance of 0.195m from the center
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