PLEASE What is the magnetic force on a proton that is moving at 3.8 x 107m/s up through a magnetic field that is 0.72 T and pointing toward you? The charge on a proton is 1.6 x 10-19 C. Use F = qvx B sine.
A. 6.1 x 10-12 N right
B. 4.4 x 10-12 N left
C. 4.4 x 10-12 N right
D. 6.1 x 10-12 N left

i guess it’s a and b

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me