At what radial distance r from the center of a toroid of 300 windings does the magnitude of the magnetic field equal that found inside a solenoid that has 600 turns per meter of length

Abookcase has a mass of 38 kg and the coefficient of friction between it and the floor is 0.82 what is the maximum force of friction between the bookcase and the floor a 372n b 305n c 412n d 449n

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.

How to tell if a molecule is polar or nonpolar with electronegativity