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A uniform magnetic field is normal to the plane of a circular loop 10 cm in diameter made of copper wire (diameter 2.5 mm). At what rate must the magnetic field change with the time if an induced current of 10 A is to appear in the loop? The resistivity of copper is 1.7x10-8?m.
An air conditioner is used to keep the interior of a house at a temperature of 25C while the outside temperature is 34C, what is the mechanical power required to keep the house cool?
A 10.4-g bullet is fired into a stationary block of wood having mass m = 5.03 kg. determine the original speed of the bullet
A molecule is represented by a charge -2q at the origin and charges +q at b1 and b2, where | b1 | = | b2 | = b, Find dipole moment of the molecule
A brick is initially 10.74 cm high and an aluminum can is initially 10.75 cm high. By how much must their temperatures be raised in order for the brick
The balance wheel of a watch oscillates with an angular amplitude of n-rad and a period of 0.10 s. Find the maximum angular speed of the wheel
The loaded cab of an elevator has a mass of 3.00 multiplied by 103 kg and moves 171 m up the shaft in 23s at constant speed. At what average speed does the force from the cable do work on the cab?
The world's largest refracting telescope is operated at the Yerkes Observatory in Wisconsin. It has an objective of diameter of 1.02 m. What is the minimum separation of two objects on the ground
Two 12-cm-diameter charged rings face each other, 17.0 apart. Both rings are charged to + 40.0. What is the electric field strength at the midpoint between two rings.
For some applications, it is important that the value of a resistance not change with temperature. For example, suppose you made a 4.60 kresistor from a carbon resistor and a Nichrome wire-wound resistor connected together so the total resistance is ..
Two identical masses are in a hemispherical bowl of radius R. One block is sitting at the bottom and the other is at the top. how high will each of them rise
Two lenses, one converging with focal length20.0cm and one diverging with focal length? 11.5cm , are placed 25.0?cm apart. Determine the magnification of the final image formed
A piston, A, has a diameter of 0.74cm. A second piston, B, has a diameter of 2.6 cm. In the absence of friction, determine the force, F, essential to support the 539.7 N weights. Answer in units of N.
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