A vertical wire carries a current straight down. What is the direction of magnetic field to the east of this wire?

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

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?

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical