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Question: The magnetic field of the Earth is approximately 0.5e-4 T. What current in a long straight wire would produce a field of equal strength at a distance of 7 cm from the wire?
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Jack and Jill are standing on a crate at rest on the frictionless, horizontal surface of a frozen pond. Jack has a mass of 74.6kg , Jill has a mass of 44.0kg, What is the final speed of the crate if Jill jumps first and then Jack, again in the same..
The downward acceleration of a 74-kg stuntwoman near the end of a fall from a very high building is 5.5m/s2
Determine the force acting on an electron moving at 2.5 x 10^5 meters per second when it enters a magnetic field perpendicular to its direction of motion
An object is dropped from rest from a height of 4.36E+6 m above the surface of the earth. If there is no air resistance, what is its speed when it strikes the earth
High power lasers in factories are used to cut through cloth and metal. One such laser has a beam diameter of 0.407 mm and generates an electric ?eld at the target having an amplitude 0.985 MV/m.
A 7.80-g bullet moving at 610 m/s penetrates a tree trunk to a depth of 5.80 cm, Use work and energy considerations to find the average frictional force that stops the bullet
Two 10.0 cm diameter electrodes 0.52 cm apart form a parallel-plate capacitor. What is the potential difference between the electrodes
a long solenoid has 500 turns. a current of 2 A is passed through it, the resulting magnetic flux linked with each turn of a solenoid is 4x1/1000wb
A current of 6.80 A is located at the origin. (This current flows parallel to the z axis, with a positive current flowing in the + k direction.) Find the magnetic field at a point 6.27 cm along the -x axis,
Two cars cover the same distance in a straight line. Car A covers the distance at a constant velocity. Car B starts from rest and maintains a constant acceleration. Both cars cover a distance of 547m in 221s.
q1. assume that when you ride on your 7.60-kg bike the weight of you and the bike is supported equally by the two
In coulomb scattering of 7.50MeV protons by a target of 7-Li, what is the energy of the elastically scattered protons at 90 degrees
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