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A circular coil enclosing an area of 180 cm2 is made of 210 turns of copper wire. The wire making up the coil has resistance of 9.0 ?, and the ends of the wire are connected to form a closed circuit. Initially, a 1.6-T uniform magnetic field points perpendicularly upward through the plane of the coil. The direction of the field then reverses so that the final magnetic field has a magnitude of 1.6 T and points downward through the coil. If the time required for the field to reverse directions is 0.30 s, what is the average current in the coil during that time?
In a head-on collision, a car stops in 0.30{\rm s} from a speed of 30{\rm m}/{\rm s}. What force is applied to the driver by his seat belt during that fraction of a second
Consider two blocks A and B, of mass mA and mB, coupled by a spring and resting on a horizontal frinctionless table. Describe the subsequent motion
IP A uniform electric field of magnitude 6 times 10^3 ;{rm{N/C}} points upward. An empty, closed shoe box has a top and bottom that are 37 cm by 28 cm, vertical ends that are 28 cm by 21cm, and vertical sides that are 21 cm by 37 cm.
How would you describe the discoveries of Benjamin franklin, Robert millikan, cgarles-augastin de coulomb and Ernest ruthford
One end of a metal rod, which is insulated from the environment, has a length of 0.30 m and cross-sectional area 2.00 x 10-5 m2, Calculate the thermal conductivity K of the material in the rod
A 1200 kg car moving north at 27 m/s is struck by a 2165 kg car moving east at 11.0 m/s. The cars are stuck together. How fast and in what direction do they move at once after the collision.
An apple is dropped from a 25m cliff. At the similar time, a person at the bottom of the cliff fries an arrow up towards the apple. The arrow sticks the apple 0.450 seconds later.
A 0.449 kg ice puck, moving east with a speed of 2.91 m/s, has the head-on collision with a 0.846 kg puck initially at rest. Assume a perfectly elastic collision, what will be the speed and direction of each object after the collision.
A projectile is fired in such a way that its horizontal range is equal to 2 times its maximum height. What is the angle of projection
If the coefficient of friction between the block and the floor is 0.40, what is the mass of the block.
The rms current in an RL circuit is 0.32A when it is connected to an ac generator with a frequency of 60Hz and an rms voltage of 25V. Find the rms voltage across the inductor
What is the speed of a beam of electrons when the simultaneous influence of an electric field of 1.48×104V/m and a magnetic field of 4.66×10?3T, What is the period of the orbit
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