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Q1. A circular coil enclosing an area of 97 cm2 is made of 197 turns of copper wire. The wire making up the coil has resistance of 6.0, and ends of the wire are connected to form a closed circuit. Originally, a 1.3 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 1.3 T and points downward during the coil. If the time required for the field to reverse directions is 0.16 s, what average current flows during the coil during that time?
Q2. After a tornado, a 0.55-g straw was found embedded 2.8 cm into the trunk of a tree. If the average force exerted on the straw by the tree was 70 N, what was speed of the straw when it hit the tree?
Which is safer as a road material
An average force of 201 N is exerted to draw the string back 1.3 m. unless otherwise directed, imagine that air resistance is negligible. Illustrate energy bar graphs to solve the difficulty .
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The object is authorized to move on a horizontal frictionless surface. The object is released from rest when the spring is compressed 0.15 m. Find out the force on the object.
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A 4.70 kg mass causes a vertical spring to stretch 0.850 meters. The spring is after that stretch and extra 0.270 meters and release (as a stopwatch starts) causing the spring and mass to oscillate.
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