What does the magnetic field do?

a) it exerts the magnetic poles
b) it exerts the magnetic force
c) it exerts electrical resistance
d) it exerts the magnetic domains

i looked it up and read some about it, but people just had the longest explanations about it, and by the time i was done reading it i was just so confused. xd

In which of the following cases is work being done on an object? question 2 options: pulling a trailer up a hill carrying a box down a corridor suspending a heavy weight with a strong chain pushing against a locked door

What is a view of science and psychology that says the value of knowledge depends on its usefulness? a. pragmatism b. psychotherapy c. physiology

Which of the following is a characteristic shared by both electron and light microscopes? a. they both employ the use of objective lenses. b. both microscopes require an internal camera to visualize the specimen. c. both microscopes have a resolving power of 0.01 nm. d. they both utilize white light to magnify the specimen.