In the operating room, anesthesiologists use mass spectrometers to monitor the respiratory gases of patients undergoing surgery. One gas that is often monitored is the anesthetic isoflurane (molecular mass = 3.06 x 10-25 kg). In a spectrometer, a single ionized molecule of isoflurane (charge = + e) moves at a speed of 6.44 x 105 m/s on a circular path that has a radius of 0.274 m. What is the magnitude of the magnetic field that the spectrometer uses? Number UnitsA 37-m length of wire is stretched horizontally between two vertical posts. The wire carries a current of 93 A and experiences a magnetic force of 0.13 N. Find the magnitude of the earth's magnetic field at the location of the wire, assuming the field makes an angle of 60.0 with respect to the wire. Number i UnitsThe 2840-turn coil in a dc motor has an area per turn of 2.90 x 102 m. The design for the motor specifies that the magnitude of the maximum torque is 5.40 N.m when the coil is placed in a 0.220-T magnetic field. What is the current in the coil? Number i UnitsTwo circular coils are concentric and lie in the same plane. The inner coil contains 90 turns of wire, has a radius of 0.010 m, and carries a current of 5.9 A. The outer coil contains 140 turns and has a radius of 0.019 m. What must be the magnitude of the current in the outer coil, such that the net magnetic eld at the common center of the two coils is zero? Number n Units v