The National High Magnetic Field Laboratory once held the world record for creating the strongest magnetic field. For brief periods of time, their largest multi-shot pulsed magnet can produce magnetic fields in excess of 85 T. To see if such a strong magnetic field could pose health risks for nearby workers, calculate the maximum acceleration amax the field could produce for Na* ions (of mass 3.8 × 10-26 kg) in blood traveling through the aorta. The speed of blood is highly variable, but 45 cm/s is reasonable in the aorta. Amax = m/s²

A charged particle moves into a region of uniform magnetic field, goes through half a circle, and then exits that region. The particle is either a proton or an electron (you must decide which). It spends 130 ns in the region. What is the magnitude of B? Give your answer in T. (mproton=1.672x1027 kg, melectron-9.1lx10-3! kg, e-1.602x10-19 C) OB

Write down an expression for the force experienced by an electron moving with a velocity, v, in a magnetic field B. By equating this expression to the force required to cause electrons to follow a circular path of radius, r, derive an expression for the ratio, (?⁄?) for an electron in terms of the magnetic field strength, the radius of the circular path and the accelerating potential, V.

A carbon-12 ion has a charge-to-mass ratio of 8.04 x 10^6 C/kg. Calculate the radius of the ion’s path when the ion travels at 150 km/s perpendicular to a 0.50 T magnetic field.

Viewers of Star Trek hear of an antimatter drive on the Starship Enterprise. One possibility for such a futuristic energy source is to store antimatter charged particles in a vacuum chamber, circulating in a magnetic field, and then extract them as needed. Antimatter annihilates with normal matter, producing pure energy. What strength magnetic field in T is needed to hold antiprotons, moving at 1.2 × 107 m/s, in a circular path 1.85 m in radius? Antiprotons have the same mass as protons but the opposite (negative) charge.