72 Use the results displayed in Problem 71 to predict the (a) magnitude and (b) inclination of Earth's magnetic field at the geomagnetic equator, the (c) magnitude and (d) inclination at geomagnetic latitude 60.0°, and the (e) magnitude and (f) in- clination at the north geomagnetic pole.

A proton is initially moving west at a speed of 1.01  106 m/s in a uniform magnetic field of magnitude 0.299 T directed vertically upward. Describe in detail the proton's trajectory, including its shape and orientation. the radius of the path   the proton's trajectory

A wire of mass 10 grams and length 50 cm carries a Southward current of 2A while resting on a horizontal table on Earth.  a) If a vertically downward uniform magnetic field of 0.2 T is applied, determine the direction and magnitude of the magnetic force on the wire.  b) Determine the acceleration of the wire if its coefficient of kinetic friction with the table is 0.4.  c) Determine the direction and magnitude of the smallest uniform magnetic field required to levitate the wire.

A uniform magnetic field points vertically upward; its magnitude is 0.520 T. An electron with kinetic energy 6.50 × 10−18 J is moving horizontally eastward in this field. What is the magnetic force acting on it? Answer in units of "N north"

A toroidal solenoid has 825 coils. How large a current must it be carrying so that the magnetic field within the coils, at a distance of 17cm from the center, is 0.025T?

A long solenoid that has 1 040 turns uniformly distributed over a length of 0.380 m produces a magnetic field of magnitude 1.00 x 10 T at its center. What current is required in the windings for that to occur? mA

Chapter 28, Problem 001 A proton traveling at 23.8° with respect to the direction of a magnetic field of strength 1.98 mT experiences a magnetic force of 9.59 × 10-¹7 N. Calculate (a) the proton's speed and (b) its kinetic energy in electron- volts. Chapter 28, Problem 009 In the figure, an electron accelerated from rest through potential difference V₁=1.06 kV enters the gap between two parallel plates having separation d = 24.5 mm and potential difference V₂= 99.1 V. The lower plate is at the lower potential. Neglect fringing and assume that the electron's velocity vector is perpendicular to the electric field vector between the plates. In unit-vector notation, what uniform magnetic field allows the electron to travel in a straight line in the gap? [₁}v₂