To monitor the breathing of a hospital patient, a thin belt is girded around the patient's chest. The belt is a 240-turn coil. When the patient inhales, the area encircled by the coil increases by 44.0 cm2. The magnitude of Earth's magnetic field is 50.0 ?T and makes an angle of 29.0° with the plane of the coil. Assuming a patient takes 2.00 s to inhale, find the magnitude of the average induced emf in the coil during that time.

An electron enters a region of space containing a uniform 2.89 × 10-³ T magnetic field. Its speed is 163 m/s and it enters perpendicularly to the field. Under these conditions, the electron undergoes circular motion. Find the radius r of the electron's path and the frequency f of the motion. r = m %3D Hz

During a transcranial magnetic stimulation (TMS) treatment, a magnetic field, typically of magnitude 5.00 T, is produced in the brain using external coils. During the treatment, the current in the coils (and hence the magnetic field in the brain) rises from zero to its peak in about 65.0 us . Assume that the magnetic field is uniform over a circular area of diameter 2.00 x 10-² m inside the brain. What is the magnitude of the average induced emf around this region of the brain during the treatment? average induced emf: V

In an electric motor, a coil with 100 turns of radius 2.0 cm can rotate between the poles of a magnet. The magnetic field magnitude is 0.20 T. When the current through the coil is 50.0 mA, what is the maximum torque that the motor can deliver?

An electron enters a region of space containing a uniform 1.03 x 10-5 T magnetic field. Its speed is 101 m/s and it enters perpendicularly to the field. Under these conditions, the electron undergoes circular motion. Find the radius r of the electron's path and the frequency f of the motion. r= f = m Hz

An electron enters a region of space containing a uniform 2.73 x 10-³ T magnetic field. Its speed is 125 m/s and it enters perpendicularly to the field. Under these conditions, the electron undergoes circular motion. Find the radius r of the electron's path and the frequency f of the motion. r = m f = Hz

Sodium ions (Na+) move at 0.854 m/s through a bloodstream in the arm of a person standing near a large magnet. The magnetic field has a strength of 0.255 T and makes an angle of 47.0° with the motion of the sodium ions. The arm contains 115 cm3 of blood with 3.50 ✕ 1020 Na+ ions per cubic centimeter. If no other ions were present in the arm, what would be the magnetic force on the arm?