Aflat, rectangular coil consisting of 60 turns measures 23.0 cm by 31.0 cm . it is in a uniform, 1.20-t, magnetic field, with the plane of the coil parallel to the field. in 0.210 s , it is rotated so that the plane of the coil is perpendicular to the field. part a what is the change in the magnetic flux through the coil due to this rotation? part b find the magnitude of the average emf induced in the coil during this rotation.

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.