Aresistor with an unknown resistance is connected in parallel to a 13 ? resistor. when both resistors are connected in parallel to an emf source of 13 v, the current through the unknown resistor is measured with an ammeter to be 3
a. what is the resistance of the unknown resistor? answer in units of ? .

In a system, when potential energy decreases, then entropy also decreases. true false

Hydrogen and helium are both members of?

Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?