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Assume that you wish to construct a simple AC generator with an output of 12 V maximum when rotated at 60 Hz. a magnetic field of 0.050 T is available. If the area of the rotating coil is 100cm2, how many turns are needed?
What least amount heat is needed to bring 20-g of water at 20C to the boiling point and completely boil it away.
The triangular coil of wire in the drawing is free to rotate about an axis that is attached along side AC. What is the magnetic moment of the loop
A piece of wood that floats on water has a mass of 0.0175kg. A lead weight is tied to the wood and the apparent mass with the wood in air and the lead weight submerged in water is 0.0765kg. what is the specific gravity of the wood
A piece of machinery with a momentum of inertia of 2.6 kg m2 rotates with a constant angular speed of 4.0radians/second when a frictional torque of 0.56 mN acts on it. What is the net torque acting on the piece
A meterstick is initially balanced on a fulcrum at its midpoint. You have four identical masses. Where should the fourth mass be placed in order to balance the meterstick
a laser beam with a wavelength of 532 is directed exactly perpendicular to a screen having two narrow slits spaced
A block of mass m1 = 1.75 kg and a block of mass m2 = 5.75 kg are connected by a massless string over a pulley in the shape of a solid disk having radius R = 0.250 m and mass M = 10.0 kg. Determine the acceleration of the two blocks
A 120-V motor has mechanical power output of 3.00 hp. It is 83.0% efficient in convertingpower that it takes in by electrical transmission into mechanical power.
two resistors r1 and r2 are in series with a 7.8 volts battery. if r1 has a resistance of 2.0 omega and r2 receives
A block of silver, mass ms = 2.05 kg, is heated in a furnace to temperature Ts, but remains solid. It is now dropped on a block of ice, mass mi = 550 g and temperature Ti = 0o C. The combination reaches equilibrium at temperature Tf = 35.4 o C. Find ..
1. in a particel accelerator protons are fired at a stationary target and collide elastically with the nuclei of the
an electric dipole consists of charges e and -e separated by 0.40 nm. it is in an electric field of strength 2.50 x 106
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