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A loop of wire in the shape of a rectangle of width 8 cm and length 90 cm and a long, straight wire carrying acurrent I= 5t^1.4-3t^1.8 downward lie on a tabletop; the wire is to the left of the rectangle and parallel to the length of the rectangle . Determine the emf that is induced in the rectangle at t = 2 seconds and the distance from the straight wire to the left side of the rectangle = 6cm. What is the direction of the induced current?
A piece of lead [c = 128 J/(kg·C°)] is heated from 18.0° C to 31.0° C. The same amount of heat is added to a piece of copper [c = 387 J/(kg·C°)]. Determine the final temperature Tf of the copper
A contact lens is made of plastic with an index of refraction of 1.58. The lens has an outer radius of curvature of +1.99 cm, What is the focal length of the lens
A large iron cylinder of mass 265 kg rests so that its circular face rolls along the edge of a table, How far has the system moved along the horizontal
A rail car of mass 4500 kg is moving with a velocity of 12.4 m/s collides with a stationary rail car of mass 6700 kg. What is the velocity of the two cars
The coil wand pendulum starts swinging with an angle of 30 degrees with the vertical. After it passes through the magnetic gap, What is the energy lost by the pendulum
A sample of paramagnetic material containing \(10^{25}\) atoms is placed in an external field magnetic field of 1 tesla at room temperature
A generator at a power plant produces a voltage of 9.00 kV and current 150 A. How much power is lost as waste heat in the transmission line
A block is suspended from a string connected to a balance. While in air, the scale reads 350 N. What is the buoyancy force on the object when immersed in water
Three resistors, 28, 48, and 80 ?, are connected in series, and a 0.53-A current passes through them, What is the equivalent resistance
plan a free-body diagram for the charge.
While eating lunch with friends Diana spots her boyfriend having lunch, and having a good time with, How fast must Diana through the apple so that it hits her boyfriend
q1. a 0.12-kg ball is placed in a shallow wedge with an opening angle of 120deg as shown in the figure. for each
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