Asquare loop of wire lies in the x, y plane with opposite corners at (0, 0) and (a, a), and is situated in a steady magnetic field b = b0(yz xˆ + xz yˆ + xy zˆ). if the loop moves with velocity v = vxˆ, calculate the motional emf e = h (v×b)· dl in terms of a, b0, and v. what is the direction of current flow in the loop?

Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.