Asimple pendulum is constructed by suspending a small metal bob with a fine wire of the same metal. the periodic time of the pendulum at temperature c1, is t1. when
the pendulum operates at a higher temperature of c2 the period of the pendulum would be?
(linear expansivity of the metal is a)

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.

Why don't you see your reflection in water with waves or repples

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.