Which best describes vibration? 0
the distance traveled per unit in time
the action of moving back and forth quickly and steadily
the distance between one compression and the compression next to it
the action of moving through a material or substance
which best describes vibration

Atomic nuclei of almost all elements consist of

Aresistor with an unknown resistance is connected in parallel to a 9 ω resistor. when both resistors are connected in parallel to an emf source of 21 v, the current through the unknown resistor is measured with an ammeter to be 4 a. what is the resistance of the unknown resistor? answer in units of ω.

What quantity do units represent in value