1a. An electron has a velocity of 1.20E+4m/s (in the positive x direction) and an acceleration of 2.25E+12 m/'s (in the positive z direction) in uniform electric and magnetic fields. If the electric field has a magnitude of 18.8N/C (in the positive z direction), what is the y component of the magnetic field in the region? Submit Answer | Tries 0/10 1b. What is the z component of the magnetic field in the region? Submit Answer Tries 0/10 2. In the figure below, the cube is 38.8cm on each edge. Four straight segments of wire - ab, bc, cd and da - form a closed loop that carries a current I = 5.03A in the direction shown. A uniform magnetic field of magnitude B = 0.0197T is in the positive y direction. B C 2a. Determine the magnitude of the magnetic force on segment ab. Submit Answer Tries 0/10 2b. Determine the magnitude of the magnetic force on segment bc. Submit Answer Tries 0/10 2c. Determine the magnitude of the magnetic force on segment cd. Submit Answer Tries 0/10 2d. Determine the magnitude of the magnetic force on segment da. Submit Answer Tries 0/10 A long piece of wire of mass 0.077kg and total length of 3.86m is used to make a square coil with 24 turns. The coil is hinged along a horizontal side, carries a 3.80A current, and is placed in a vertical magnetic field with a magnitude of 0.0136T. Determine the angle that the plane of the coil makes with the vertical when the coil is in equilibrium. Submit Answer Tries 0/10 Find the torque acting on the coil due to the magnetic force at equilibrium. Submit Answer Tries 0/10Singly charged uranium-238 ions are accelerated through a potential difference of 2.00kV and enter a uniform magnetic field of 1.16T directed perpendicular to their velocities. Determine the radius of their circular path. Submit Answer Tries 0/10 Repeat for uranium-235 ions. Submit Answer Tries 0/10 What is the required radius of a cyclotron designed to accelerate protons to energies of 32.2MeV using a magnetic field of 5.31T? Submit Answer Tries 0/10 A Hall-effect probe operates with a 127mA current. When the probe is placed in a uniform magnetic field with a magnitude of 0.0788T, it produces a Hall voltage of 0.652 uV. When it is measuring an unknown magnetic field, the Hall voltage is 0.315 pV. What is the unknown magnitude of the field? Submit Answer Tries 0/10 If the thickness of the probe in the direction of B is 1.82mm, calculate the charge-carrier density (each of charge e). Submit Answer Tries 0/10 A proton moving in the plane of the page has a kinetic energy of 6.11MeV. It enters a magnetic field of magnitude B = 1.03T directed into the page, moving at an angle of 0= 45.0deg with the straight linear boundary of the field, as shown in the figure below. Calculate the distance x from the point of entry to where the proton leaves the field. Submit Answer Tries 0/10 Determine the angle between the boundary and the proton's velocity vector as it leaves the field. Submit Answer Tries 0/10A small bar magnet experiences a 0.0460N.m torque when the axis of the magnet is at a 76.0 to a 0.388T magnetic field. What is the magnitude of its magnetic dipole moment? Submit Answer Tries 0/10 The image below shows a mass spectrometer, an analytical instrument used to identify the various molecules in a sample by measuring their charge-to-mass ratio e/m. The sample is ionized, the positive ions are accelerated (starting from rest) through a potential difference AV, and they then enter a region of uniform magnetic field. The field bends the ions into circular trajectories, but after just half a circle they either strike the wall or pass through a small opening to a detector. As the accelerating voltage is slowly increased, different ions reach the detector and are measured. Typical design values are a magnetic field strength B = 0.507 T and a spacing between the entrance and exit holes d = 7.93 cm. AV Atomic Masses 12 C 12.000Ou 14N 14.003lu 160 15.9949u Detector What accelerating potential difference AV is required to detect N2? Submit Answer Tries 0/10 What accelerating potential difference AV is required to detect Oz? Submit Answer Tries 0/10 What accelerating potential difference AV is required to detect cot? Submit Answer Tries 0/10The 10 turn loop of wire shown below with I=39.5cm, and w=19.75cm lies in a horizontal plane parallel to a uniform horizontal magnetic field, and carries a 4.35A current. The loop is free to rotate about a nonmagnetic axle through the center. A 68.2g mass hangs from one edge of the loop. What magnetic field strength will prevent the loop from rotating about the axle? Submit Answer Tries 0/10 10 turns Axle