When an airplane is flying at a speed of 280 m/s while intersecting the Earth's magnetic field of 40 A/m, an induced electromotive force (emf) of 600 mV is observed between the ends of the airplane's wings. What is the wingspan of the airplane?

A magnetic field has a magnitude of 0.0527 T and is uniform over a circular surface whose radius is 0.226 m. The field is oriented at an angle of 27.9o with respect to the normal to the surface. What is the magnetic flux through the surface?

Suppose that an ion source in a mass spectrometer produces doubly ionized gold ions (Au2+), each with a mass of 3.27 × 10-25 kg. The ions are accelerated from rest through a potential difference of 1.70 kV. Then, a 0.510-T magnetic field causes the ions to follow a circular path. Determine the radius of the path.

A thin metal rod has a mass of .024kg and is connected to two parallel rails. The rod can slide left or right. The distance between the two parallel rails is 0.0256m. The is a magnetic field that is perpendicular to the plane of the parallel rails coming out of the page with a magnitude of 0.0563T. The rails are connected by a thin wire. When a current of 0.00913A through the wires(and rod) what is the magnitude of the force and direction of the moving bar?

An aircraft, of wing span 38.7 m, flies horizontally at a speed of 900 km/h. If the angle of dip of the magnetic field lines of the Earth is 64 degrees with respect to the Earth surface, calculate the emf induced between the tips of the wings. Take the value of the horizontal component of the magnetic field of the Earth B=2×10−5B=2×10−5 T. Please remember to select the correct units.

A positively-charged ion travelling at 250 m sis fired between two parallel charged plates, M and N. There is also a magnetic field present in the region between the two plates. The direction of the magnetic field is into the page as shown. The ion is travelling perpendicular to both the electric and the magnetic fields. M ✗ ✗ X X (+) ✗ ✗ N The electric field between the plates has a magnitude of 200 V m¹. The magnetic field is adjusted so that the ion passes through undeflected. What is the magnitude of the adjusted magnetic field, and the polarity of the M terminal relative to the N terminal? Magnitude of magnetic field Polarity of M relative to N (teslas) A. 0.8 positive B. 0.8 negative C. 1.25 positive D. 1.25 negative