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a 50 cm long solenoid has 100 turns of wire and carries a current of .95 A. it has a ferromagnetic core completely filling its interior where the field is .71 T. determine the
(a) magnitude permeability and,
(b) relative magnetic permeability of the material.
In 2000, NASA placed a satellite in orbit around an asteroid. Consider a spherical asteroid with a mass of 1.00×1016kg and a radius of 9.90km, What is the escape speed from the asteroid
If the pump outlet is blocked and the handle pushed until internal length of the pump cylinder is 21, by how much does the air temperature rise? Suppose that no heat is lost.
In the bohr model of the hydrogen atom, an electron is the 6th excited state moves at a speed of 60km/s in a circular path having a radius of 2mm.
A disc-shaped grindstone of mass 3.0 kg and radius 8.0 cm is spinning at 600 rev/min. What was the stone's initial kinetic energy
A sound source emits sounds of frequency 215 Hz that travel through still air at 340 m/s. Find the frequency heard by the listener
Some human nerve cells have a long, thin cylindrical cable (the axon) from their inputs to their outputs. Determine the resistance of the fluid in this axon
A farmer planted a field of Bt 123 corn and wants to estimate the yield in terms of bushels per acre. He counts 22 ears in 1/1000 of an acre. He determines that each ear has about 700 kernels on average. He also knows that the bushel contains abou..
A pitcher throws a curveball that reaches the catcher in 0.59 s, What is the angular displacement of the baseball (in radians) as it travels from the pitcher to the catcher
A car is driving directly north on the freeway at a speed of 117 km/h and a truck is leaving the freeway driving 76 km/h in a direction that is 40° west of north
A typical digital cell phone emits radio waves with a frequency of 1.9 GHz. how many photons are emitted each second
You spray your sister with water from a garden hose. The water is supplied to the hose at a rate of 0.105 liters per second, At what speed does the water exit the nozzle
On an airplane's takeoff, the combined action of the air around the engines and wings of an airplane exerts an 8020-N force on the plane, focussed upward at the angle of 55.0° above the horizontal. The plane rises with constant velocity in the vertic..
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