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Suppose that the magnetic field of the Earth were due to a single current moving in a circle of radius 2910 km through the Earth’s molten core. The strength of the Earth’s magnetic field on the surface near a magnetic pole is about 6.0·10–5 T. How large a current (in the equatorial plane) would be required to produce such a field?You will need the distance from the center of the Earth to the North Pole, which is 6380 km.Note that in this case the distance to the Pole (the axial distance z) is NOT >> the radius of the current loop, r.
In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0437 s, determine the vertical components of the launch velocity
A 1.0 kg mass is connected to a spring with a spring constant of 9.00 N/m. find the maximum spring potential energy of the simple harmonic motion
You are in a hot air balloon (yes, another balloon problem!) rising from the ground at a constant velocity of 2.70 m/s upward. To celebrate the takeoff, you open a bottle of champagne, expelling the cork with a horizontal velocity of 4.00 m/s rela..
A parallel plate capacitor has a capacitance of 7.0 µF when filled with a dielectric. evaluate the dielectric constant of the dielectric
find friction force that acts on the bear.
How much charge is applied to each of the cylinders.
Two identical guitar strings are prepared such that they have the same length (1.91 m) and are under the same amount of tension, What is the wave propagation speed on the guitar strings
A beam of protons, each with kinetic energy of 40MeV, approaches a step potential of 30MeV. What fraction of the beam is reflected and transmitted
A block with mass of .6 kg has an initial speed of 4 m/s and slides along a horizontal surface with a kinetic frictional force of 700 N. How far will the spring be compressed
q1. the active element of a certain laser is made of a glass rod 33.0 cm long and 1.60 cm in diameter. assume the
An ac generator with a frequency of 135Hz and an rms voltage of 20.5V is connected in series with a 11.0 kOhms resistor, What is the rms current in this circuit
What is the free-fall acceleration at the surface of the moon and What is the free-fall acceleration at the surface of the Jupiter
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