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At t = 0, a rectangular coil of resistance R = 1.6 ? and dimensions w = 3 cm and L = 8 cm enters a region of constant magnetic field B = 1.7 T directed into the screen as shown. The length of the region containing the magnetic field is LB = 15 cm. The coil is observed to move at constant velocity v = 6 cm/s. What is the force required at time t = 0.8 sec to maintain this velocity?
The pressure in a vessel containing methane and water at 70°C is 10 atm. Estimate the mole fraction of methane in the liquid
A 290-kg chandelier is suspended from vertical steel cable. The cable is 7.9m long. How much does the cable elongate
Most of the motion generated by joints in the human body are examples of levers. An example of a third class lever is the forearm; what force is exerted by the biceps muscle
Calculate the electric field within the membrane, if the thickness of the membrane were quadrupled.
When yellow light from a sodium lamp shines on a certain photocell, What potential would be needed to stop the electrons if light with 4000 A is used
An inkjet printer uses tiny dots of red, green, and blue ink to produce an image. what is the maximum allowable dot separation
Jack and Jill ran up the hill at 3.3 m/s . The horizontal component of Jill's velocity vector was 2.0 m/s. What was the angle of the hill? Illustrate what was the vertical component of Jill's velocity?
A student could either pull or push, at an angle of 30â?? from the horizontal, a 45kg crate on a horizontal surface, Calculate the minimum work required for both pulling and pushing
Above the surface of the Earth, the magnitude of the acceleration due to gravity is inversely proportional to the square of the distance from the Earth's center.
A wooden block weighing 7 N is at rest on top of a wooden desk. The coefficient of static friction between the block and the desk is 0.41. Find out the minimum horizontal force required to move the block if the following occurs.
You've been walking at a steady, and rope pulls up on the sled at a 21 angle. You estimate that the mass of the sled, with your friend on it, is 64 and that you're pulling with a force of 84.0.
A soccer player kicks the ball toward a goal that is 27.0 m in front of him. Find the speed of the ball when the goalie catches it in front of the net
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