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A cylindrical electromagnet contains a uniformly magnetized core having a magnetization of 1.5 x10^6 A/m, surrounded by a coil 19 cm long with 3030 turns of wire carrying a current of 3.7 A. Find the magnetic field in the core. (Enter the magnitude of the magnetic field.)
You are piloting a spacecraft whose total mass is 1170 kg and attempting to dock with a space station in deep space. How long should you sustain the firing of the retro-rocket
A father pulls his young daughter on a sled with a constant velocity on a level surface a distance of 10m. how much work does the father do
When 165 grams of an unknown metal at 225 degrees C is placed into 875 grams of water at 24.4 degrees C inside a perfect calorimeter, Find the specific heat capacity of the unknown metal
Because the mass would not make it around the loop if released from the height of the top of the loop (do you know why?) it should be released above the top of the loop-the-loop height.
two gear wheels with radius of 25 cm an 60 cm have interlocking teach. How many radians does the smaller wheel turn
A yo-yo has a rotational inertia of 970 g·cm2 and a mass of 104 g. Its axle radius is 3.15 mm, What is the magnitude of its linear acceleration
You're carrying a 3.6-m-long, 25kg pole to a construction site when you decide to stop for a rest. You place one end of the pole on a fence post and hold the other end of the pole 35cm from its tip.
A wire of length L is wound into a square coil with 127 turns and used in a generator that operates at 60.0 Hz, What is the length Lof the wire used to construct the coil
A frictionless pulley (I=1/2MR^2) has a mass of 2.50kg and a radius of 20.0cm. how much kinetic energy does the stone have
Pick at least two sample cases and for each sample case include both a physical reason you'd expect fo to go up or down (think about how sound waves are squishing together or spreading apart) and a mathematical reason (like will picking a + in the..
A pulse from a ruby laser (lambda = 694.3 nm) has an average power of 20 MW and lasts 2.3 ns. What is the total energy of the pulse
Assuming that the acceleration is uniform when the racquet is applied over a distance of 0.52 m, illustrate what is the magnitude of the force exerted on the ball by the racquet?
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