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There are three different methods to induce an emf in a coil of wire: 1) change the magnetic field that is applied in the region inside the coil; 2) change the area of the coil (e.g., by deforming it); and 3) ___________________ (you complete the statement).
assume the mass of cart 1 is m1 = 234 g and the mass of cart 2 is 181 g. Calculate the energy lost in the collision
A woman on a bridge 71.0 m high sees a raft floating at a constant speed on the river below. She drops a stone from rest in an attempt to hit the raft. The stone is released when the raft has 6.60 m more to travel before passing under the bridge. ..
The drawing shows a wire composed of three segments, AB, BC, and CD. There is a current of I = 2.9A in the wire. There is also a magneticfield B (magnitude= 0.24 T) that is the same everywhere and pointsin the direction of +z axis.
A 386 g object is attached to a spring andexecutes simple harmonic motion with a period of 0.240 s. If the total energy of the system is5.48 J. Find the maximum speed of the object
A supersonic jet flying at 145 m/s is accelerated uniformly atthe rate of 23.1 m/s2 for 20.0 s. How many times thespeed of sound is the planes final speed
Carol drops a stone in a mine shaft 122.5 metres deep. How soon after she drops the stone does she hear it hit the bottom of the shaft
Two lightbulbs operate on the same potential difference. Bulb A has four times the power output of bulb B. What is the ratio of the current in bulb A to the current in bulb B?
A concrete slab is 10.9 cm thick and has an area of 5.1 m2. Find what minimum power must be supplied to the coils to maintain a temperature difference of 20.0°C between the bottom of the slab and its surface
A solar cell generates a potential difference of 0.0984 V when a 500 ? resistor is connected across it, What is the internal resistance of the solar cell
A wrecking ball swings at the end of a 11.4-m cable on a verticalcircular arc. The crane operator manages to give the ball a speedof 12.0 m/s as the ball passes through the lowest point of itsswing and then gives the ball no further assistance.
An 87.6 g lead ball is dropped from rest from a height of 5.60 m. The collision between the ball and the ground is totally inelastic. Assuming all the ball's kinetic energy goes into heating the ball, find its change in temperature.
A person with a near-point distance of 32 cm is able to get a usable magnification of 12 with a particular magnifying glass. What is the friend's near-point distance
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