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The armature of an ac generator has 100 turns. Each turn is a rectangular loop measuring 8.0 cm by 12 cm. The generator has a sinusoidal voltage output with an amplitude of 24 V. If the magnetic field of the generator is 250 mT,
a) With what frequency does the armature turn?
b) If you double the B and cut ω in half, how does this affect the amplitude?
A string on a guitar vibrates at 420 Hz. If the tension on the string is 102 N, what is the mass of the string if the portion that vibrates is 63.7 cm long
Where can a third charge be placed. To what common temperature must the two pieces be heated in order that the cylinder just fit over the piston.
A long pipe of outer radius 3.10 cm and inner radius 2.64 cm carries a uniform charge density of 3.22 mC/m3. calculate the electric field r = 6.51 cm from the centerline of the pipe
A 0.2kg marble is launched off the end of a table and can be considered to be in free fall. The initial speed of the marble (Vi) is 2m/s. find the force that the floor exerts on the marble
q1. two trains each having a speed of 38 kmh are headed at each other on the identical straight track. a bird that can
What is the net force exerted on the skier, assuming his acceleration is constant.
A sled is pulled with a horizontal force of 20 N along a level trail, and the acceleration is found to be 0.35 m/s2. An extra mass m = 4.2 kg is placed on the sled. If the same force is just barely able to keep the sled moving, what is the coeffic..
An alien spacecraft flies from its home planet to earth, a distance of 4.33 light-years, according to the aliens on board. determine the distance between the alien planet and the earth
A ring is fitted loosely (with no friction) around a long, smooth rod of length L = 0.51 m. Determine the radial velocity of the ring
Green light (555 nm) is normally incident on a pair of slits which are 12mircometers apart. How many interference fringes will there be
A device is turned on and 3.00 A flows through it 0.100 ms later. What is the self-inductance of the device if an induced 150 V emf opposes this
In her bathroom, Mindy has an overhead heater that consists of a coiled wire made of nichrome that gets hot when turned on. When the heater is first turned on, it has not yet heated up, so it is operating at 20° C. What is the current through the wi..
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