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A generator is designed to produce a maximum emf of170 V while rotating with an angular speed of 3700 rpm. Each coil of the generator has an area of1.5×10-2 m2 If the magnetic field used in the generator has a magnitude of 4.8 × 10-2 T, determine how many turns of wire are needed?
A 2.0-C charge moves with a velocity of (2.0i + 4.0j + 6.0k) m/s and experiences a magnetic force of (4.0i - 20j + 12k) N. The x component of the magnetic field is equal to zero. Find out the y component of the magnetic field.
A running house cat has 13.5 J of kinetic energy at speed "v". What would her kinetic energy be if she ran half as fast as the speed in part A
The vertical displacement y(x,t) of a string stretched along the horizontal x-axis is given by y(x,t) = (6.00 mm) cos[(3.25 m-1)x - (7.22 rad/s)t]. What is the distance between adjacent crests of the wave
In a circus performance, a monkey on a sled is given an initialspeed of 3.8 m/s up a 25° incline. How far up the incline does the sled move
assume you pay 0.10 per kw-hour for electricity. how much would it cost just to keep the hot water inside the heater
Why is it sometimes better to use a small telescope in orbit around the Earth than it is to use a large telescope on a mountaintop?
When a potential difference of 12V is applied to a wire 7.1m long and 0.34mm in diameter the result is an electric current of 2.2A. What is the resistivity of the wire
Calculate kinetic energy of a solid uniform sphere with a radius of 0.145m and a mass of 14.0kg if it is rotating at 6.35rad/s about an axis through its center
Suppose a cylindrical habitat in space 5.90 km in diameter and 37.0 km long has been proposed. How fast would the cylinder have to rotate to imitate the Earth's gravitational field at the walls of the cylinder
A (smooth) rope of length L and mass m is placed above a hole in a table. One end of the rope falls through the hole, Find the mechanical energy lost from the rope as the end of the rope leaves the table
In outer space, a baseball of mass m = 0.140 kg travels at velocity vi = (2.00 m/sec, 5.00 m/sec, 0); let the z-axis be up out of the plane of paper. calculate the average interaction force on the stick
you apply a potential difference of 4.5 volts between the ends of a wire that is 2.5 m in length and .654mm in radius. What length of nichrome wire will you use
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