An alpha particle (the nucleus of a helium atom), carrying a charge of 3.2 x 10-19 C
moves at 4.1 x 107 m/s at a right angle to a
magnetic field.
If the particle experiences a force of
2.3 x 10-14 N due to the magnetic field, what
is the magnitude of the magnetic field?
Answer in units of T.

The pilot of a helicopter hovers at an altitude of 1200 feet over a park. the angle of depression to the base of a statue is 17 degrees. the angle of depression to the nearest park exit, in line with the statue, is 14 degrees. to the nearest foot, what is the distance from the statue to the exit?

Athird point charge q3 is now positioned halfway between q1 and q2. the net force on q2 now has a magnitude of f2,net = 5.861 n and points away from q1 and q3. what is the value (sign and magnitude) of the charge q3?

How can a cyclist's acceleration change even if its velocity remains constant?