In the scientific method, a hypothesis is a

Which quantities are scalars? choose all that apply a.distance b.speed c. acceleration d.velocity

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.

Awhite-blue star is hotter than a red star. select the best answer from the choices provided true or false