True or False: Speed is a vector quantity.

Current enters a circuit at a: 1.positive terminal 2.negative terminal 3.low potential side 4.resistor

Which of the choices below is one of the primary gases found in the atmosphere? a. helium b. carbon dioxide c. nitrogen d. argon

Two polarizers are oriented at 40∘ to each other and plane-polarized light is incident on them. if only 16 percent of the light gets through both of them, what was the initial polarization direction of the incident light?