If an object can make 10 revolutions in two minutes, what’s it’s period?

What would be the result of an alpha particle coming into a magnetic field? a) the alpha particle will stop moving. b) the alpha particle will reverse its direction. c) the alpha particle will be deflected in a curve path. d) the alpha particle will continue to travel in a straight line.

What’s #16 asking and how do i solve it?

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion