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A toroid having a rectangular cross section (a = 2.00 cm by b = 3.00 cm) and inner radius R = 3.80 cm consists of 500 turns of wire that carries a sinusoidal current I = Imax sin ?t, with Imax = 50.0 A and a frequency f = ?/2? = 60.0 Hz. A coil that consists of 20 turns of wire links with the toroid, as shown in Figure P31.17. Determine the emf induced in the coil as a function of time.
____________V cos?t?
A Klingon spacecraft moves away from Earth at a speed of -.8c. With what speed is the Klingon craft moving as measured by the crew of the Enterprise
A blacksmith heats a 1.9 kg iron horseshoe to 480 degree C, then plunges it into a bucket containing 10kg of water at 20 degree C. The specific heat of iron is 447 J/kgK. What is the final temperature.
A stick of mass F is lying on a frictionless surface. A small ball of mass G and velocity v collides with the stick in the center of the stick a right angle to the rod. What is the angular velocity around the axis of rotation after this collision
When Capacitor C1 having voltage V is connected with another capacitor C2 having zero charge in parallel with C1 what would be the dissipated energy.
A dog sits 1.50 m from the center of a merrygo-round with an angular speed of 1.78 rad/s. what is the dog's mass
An object, at the top of a very tall building, is released from rest and falls freely due to gravity. Neglect air resistance and compute distance covered by the object between times t1 = 5.5 s and t2 = 7.9 s after it is released.
The current in an RL circuit builds up to one-third of its steady state value in 3.80 s. Find the inductive time constant
An electric vehicle starts from rest and accelerates at a rate of 1.8 m/s2 in a straight line until it reaches a speed of 29 m/s. How far does the vehicle move from start to stop
What is the electric field strength between the disks? A proton is shot from the negative disk toward the positive disk. What launch speed must the proton have
A centrifuge spins small tubes in a circle of radius 21 cm at a rate of 1419 rev/min. What is the centripetal force on a sample that has a mass of 5 g
15. An object weighing 300 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 265 N. find the density of the object
A 0.65 percent C hypoeutctoid plain carbon steel is slowly cooled from about 950°C to a temperature just slightly above 723°C. calculate the weight percent austenite and weight percent proeutectoid ferrite in this steel. Explain it.
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