To protect her new two-wheeler, iroda bike buys a length of chain. she finds that its linear density is 0.88 lb/ft. if she wants to keep its weight below 1.9 lb, what length of chain is she allowed?

An electron moving at 5.06 103 m/s in a 1.23 t magnetic field experiences a magnetic force of 1.40 10-16 n. what angle does the velocity of the electron make with the magnetic field? there are two answers between 0° and 180°. (enter your answers from smallest to largest.)