A 1kg mass on the end of a string of length 1m swings in a horizontal circle at constant speed. After one revolution, how much work has been done on the mass by the tension in the string?

Agalvanometer has an internal resistance of 100 ω and deflects full-scale at 2.00 ma. what size resistor should be added to the galvanometer to convert it to a milliammeter capable of reading up to 4.00 ma, and how should this resistor be connected to the galvanometer?

An electric current is flowing through the cord below.what will happen to this current if a magnet is brought near the cord? a. the electric current will stop flowing. b. it will exert a force on the voltage. c. the resistance of the wire will decrease. d. it will exert a force on the electric current.

Aphysical change is a change in the size, shape,, or stafe of matter true or false