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An ideal transformer has 50 turns in its primary and 200 turns in its secondary. 7.0- ac is connected to the primary. What is voltage available at the secondary? What is the current in a 7 device connected to the secondary? What is the power supplied to the primary?
Two identical coaxial coils of wire of radius 39.7 cm are directly on top of each other, separated by a 3.03 mm gap. Determine the magnitude that the current in the upper coil
In a uniform electric field of magnitude E, the field lines cross through a rectangle of area A at an angle of 77.0° with respect to the plane of the rectangle
A particle is moving with a certain speed. Its speed and energy are being measured with respect to Earth. determine the original speed of the particle
A playground merry-go-round has a radius of 4.30 m and a moment of inertia of 245 kg/m^2 and turns with negligible friction about a vertical axle through its center. What is the average power supplied by the child
Old naval ships fired 14 kg cannon balls from a 250 kg cannon. It was very important to stop the recoil of the cannon, since otherwise heavy cannon would go careening across the deck of the ship. In one design, a large spring with spring constant 2..
What is the charge on each
A stone is thrown horizontally at 70.0 m/s from the top of a very tall cliff. Calculate its horizontal position and vertical position at 2.00 s intervals for the first 10.0s
The electric potential difference between two infinite, parallel metal plates is V. If the plates are separated by a distance L = 4.50 mm and the electric field between plates is E = 270 V/m, what is V.
The astronaut throws a rock straight up with a velocity of + 16.9 m/s, What is the acceleration (magnitude and direction) due to gravity on this planet
A plane, diving with constant speed at an angle of 49.0° with the vertical, releases a projectile at an altitude of 560 m. The projectile hits the ground 6.00 s after release. What is the speed of the aircraft
A speed skater moving across frictionless ice at 8.80 hits a 4.20-m-wide patch of rough ice. What is her acceleration on the rough ice
A proton is confined within an atomic nucleus of diameter 4.1 fm. Estimate the smallest range of speeds
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