In 1996, NASA performed an experiment called the Tethered Satellite experiment. In this experiment, a 3.75 x 104-m length of wire was let out by the space shuttle Atlantis to generate a motional emf. The shuttle had an orbital speed of 8.02 x 103 m/s, and the magnitude of the earth's magnetic field at the location of the wire was 6.44 x 10-5 T. If the wire had moved perpendicular to the earth's magnetic field, what would have been the motional emf generated between the ends of the wire?

The electric field between the plates of a gear selector in a mass spectrometer is 1×105 V/m. The magnetic field of the speed selector is the same as that of the spectrometer. A beam of +e charged neon ions leaving the speed selector moves in a circular path in the spectrometer before hitting the photographic plate. After a certain time, three spots are observed at distances of 7.4 cm, 7.8 cm and 8.15 cm, respectively.Find the magnetic field assuming that the difference in mass between two isotopes is 1 amu (atomic mass unit):Select the correct answer:

An electron moving with a velocity, v =(4.0 i+ 3.0 j+ 2.0k) x 10^6m/s enters a region where there is a uniform electric field and a uniform magnetic field. The magnetic field is given by B =(1.0 i − 2.0 j + 4.0k) x 10^−2T. If the electron travels through a region without being deflected, what is the electric field?

A jet plane is travelling towards west at a speed of 1800 km/h. What is the voltage difference developed between the ends of the wing having a span of 25 m, if the Earth’s magnetic field at the location has a magnitude of 5×10-4 T and the dip angle is 30°.

An MRI technician moves his hand from a region of very low magnetic field strength into an MRI scanner's 1.60 T field with his fingers pointing in the direction of the field. Find the magnitude of the average emf (in V) induced in his wedding ring, given its diameter is 2.26 cm and assuming it takes 0.210 s to move it into the field.

A 35.6-meter-long spacecraft flies past a neutron star, and passes through the neutron star s extremely powerful magnetic field of strength 7.95 x 10^4 T. The spacecraft travels at a velocity of 2.43 km/s in a direction perpendicular to the magnetic field; the spacecraft s long axis is also perpendicular to the magnetic field. What is the induced emf (voltage) between the two ends of the spacecraft?     6.88E+08 V     6.88E+09 V     6.88E+06 V     6.88E+05 V

ASAP

Pulsars, or neutron stars, rotate at a fairly high speed, and they are surrounded by strong magnetic fields. The material in neutron stars is a good conductor, and hence a motional emf is induced between the center of the neutron star and the rim. Suppose that a neutron star of radius 12 km rotates at the rate of 35 rev/s and that the magnetic field has a strength of 1.00 x 108 T. What is the emf induced between the center of the star and a point on its equator?

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