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1) Einstein proposed that electrons on the surface of a metal gradually absorb enery from photons until they have enough engery to elave the surface A) True B) False 2) Niels Bohr's model of the hyrdogen atom A) was controversial becaue it contradicted accepted principles of physics B) held...

The attractive force between two unlike charges has the same strenght as the replusive force between two like charges A) TRUE B) FALSE Electric field lines are drawn A) radiating outward like spokes on a wheel B) away from the positive test charge C) toward the positive test charge D) in...

A magnetic field a) is produced by an excess of stationary electric charges b) is produced by a deficiency of stationary electric charges c) attracts or repels stationary electric charges d) is produced by moving charges The north end of a suspended magnet will point to the magnetic north pole...

Molecules in a solid a) are harder than molecules in liquids or gases b) transfer heat to their neighbors by a process called convection c) have no internal energy because they are not moving around d) are held in nearly fixed positions by strong attractive forces