Acharged particle moves at 2.5 × 104 m/s at an angle of 25° to a magnetic field that has a field strength of 8.1 × 10–2 t. if the magnetic force is 7.5 × 10–2 n, what is the magnitude of the charge? a) 3.7 × 10–5 c b) 4.1 × 10–5 c c) 8.8 × 10–5 c d) 1.0 × 10–4 c

Suppose you have a box. which of these is not necessarily a true statement regarding the relationship between the force applied to the box, the work done on the box, and the distance the box is moved? a. if the box is not moved, no force is being applied to the box. b. if no force is applied to the box, no work is done on the box. c. if work is done on the box, then a force is applied to the box. d. if work is done on the box, then the box is moved a distance.