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A transformer on a pole near a factory steps the voltage down from3600 V (rms) to 120 V (rms). The transformer is to deliver1600 kW to the factory at 92% efficiency. Find values for the following.
a) the power delivered to the primaryb) the current in the primaryc) the current in the secondary
Consider an equilateral triangle 12cm on a side. If a charge of 6*10^-5 C is placed at each vertex, find the force on the top charge.
Find out the magnitude of the wind velocity. Find the direction of the wind velocity.If the wind velocity is 39 due south, in what direction should the pilot set her course to travel due west? Use the same airspeed of 213 .
The output piston of a hydraulic press has a cross-sectional area of 0.20 cm2. What force is applied to the input piston if that piston has a diameter of 5.0 cm
Suppose you are at the earth's equator and observe a satellite passing directly overhead and moving from west to east in the sky. How far above the earth's surface is the satellite's orbit
Energy is to be stored in a flywheel in the shape of a uniform solid disk with a radius of R = 1.30m and a mass of 73.0kg. find the maximum kinetic energy that can be stored in the flywheel
a. 1.6m long string fixed at both ends vibrates at resonant frequencies of 780hz and 1040hz with no other resonant
a 15.0 kg stone slides down a snow-covered hill leaving point a with a speed of 10.0 ms. there is no friction on the
A person is riding a bicycle, and its wheels have an angular velocity of 18.4 rad/s. Then, the brakes are applied and the bike is brought to a uniform stop, How much time does it take for the bike to come to rest
A slingshot fires a pebble from the top of a building at a speed of 20.00 m/s. The building is 28-m tall. Ignoring air resistance, find out the speed with which pebble strikes the ground when the pebble is fired (a) horizontally (b) vertically str..
A mass of 10 kg is attached to the 20 cm spring (k = 5000N/m).Initially, horizontally located spring and the mass are at rest. Determine how much the spring was stretched
When a turntable rotating at 45 rev/min is shut off, it comes to rest in 20 s. Find the angular acceleration
If wind blows at 32 m/s over a house, what is the net force on the roof if its area is 238 m2 and is flat
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