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Sodium ions (Na+) move at 0.841 m/s through a bloodstream in the arm of a person standing neara large magnet. The magnetic field has a strength of0.255T and makes an angleof 58.0° with themotion of the sodium ions. The arm contains 120 cm3 of bloodwith 3.00 1020Na+ ions per cubic centimeter. If no other ions were presentin the arm, what would be the magnetic force on the arm?
A swing is made from a rope that will tolerate a maximum tension of 8.0 102 N without breaking. What is the mass of the heaviest person
The magnetic field in a radio wave traveling through air has amplitude 2.5 10-11 T and frequency 2.9 MHz. Find the amplitude and frequency of the electric field
q1. a conducting rectangular loop of mass m resistance r and dimensions w by l falls from rest into a magnetic field.
A solid cube of iron (density = 7.87 g/cm3) has a mass of 88.0 g. What is the resistance between opposite faces of the cube
A playground swing at its highest point during a child's play is 3.0 meters above the ground, Determine the torque exerted by gravity on a child on the swing when the swing is at the highest point of its motion
Zartan of the jungle crosses a river by grabbing an 8 m long vine, conveniently hanging from a strong branch, and swinging over the water. find his acceleration and the tension in the vine
This technique is capable of detecting magnetic fields as weak as 1.0 10-15 T. Model the neuron as a long wire carrying a current and find out the current it must carry to produce a field of this magnitude at a distance of 4.7 cm from the neuron..
q1. horse races once around a circular track in a time of 176 s with a speed of 26 ms. what is the radius of the
Suppose 4.00 g of hydrogen is separatedinto electrons and protons. Suppose also the protons are placed atthe earth's North Pole and the electrons are placed at the SouthPole. What is the resulting compressional force on the Earth?
Starting at rest, two students stand on 12.5-kg sleds, which point away from each other on ice, and they pass a 5.50-kg medicine ball back and forth, How fast is the student on the right moving right after catching the ball
A uniform disk of radius R and mass M is mounted on an axle supported in fixed frictionless bearings. find the angular acceleration and tangential acceleration
An electric dipole consists of 1.50g spheres charged to \pm 2.30nC at the ends of a 6.00cm long massless rod. What is the dipole's angular velocity at the instant it is aligned with the electric field
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