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A cylindrical electromagnet contains a uniformly magnetized core having a magnetization of 1.9 106 A/m, surrounded by a coil 23 cm long with 3300 turns of wire carrying a current of 3.7 A. Find the magnetic field in the core. (Enter the magnitude of the magnetic field.)
A fan blade rotates with angular velocity given by ?z(t)= ? ? ? t2, where ? = 4.60rad/s and? = 0.795rad/s3, Calculate the angular acceleration as a function of time
An 88? resistor has a current of 0.70A and is connected in series with a 130? resistor. What is the emf of the battery to which the resistors are connected
A tennis ball is hit straight up at 25 m/s from the edge of a sheer cliff. Some time later, the ball passes the original height from which it was hit, What total distance did the ball travel
A car travels east at 77 km/h for 6.0 h. It then travels 40.0° east of north at 112 km/h for 6.0 h. What is the average velocity for the trip
While running, a person dissipates about 0.524 J of mechanical energy per step per kilogram of body mass. If a 65.5 kg person dissipates a power of 76.6 W during a race, explain how fast is the person running?
A 200-turn retangular coil with an area of 20.0 cm x 30.0 cm is mounted on a rotating frame, What is the maximum emf in the coil
What is atmospheric pressure on top of Mt. Everest on a day when water boils there at a temperature of 80.0°C
A car turns around a level ben of radius 12 m to the center of gravity of the car. What is the fastest speed the car can travel at without tending to overturn
The ball rebounds straight upward to a height of 0.700 m. Illustrate what are the magnitude and direction of the impulse of the net force applied to the ball during the collision with the floor?
You ionize a hydrogen atom with a photon with wavelength 77.5nm. What orbital was the electron in before ejection
An object hanging in air, as in Figure A below, caused the scale to balance at 0.420 kg. Find the apparent weight of the object when submerged in water
6 kg of a substance undergoes a process from 1.00 MPa, 0.50 m^3 to 500 kPa, Find the work in kJ for the path given below and Find the heat transfer for the process in Btu. PV^1.6 = constant
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