Which statement is true for electric field lines? a. field lines should always be parallel to the equipotential lines. b. field lines should always be perpendicular to the equipotential lines. c. field lines should always be parallel to each other. d. field lines should always be crossing each other. e. field lines should always be perpendicular to each other.

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?

Which lists the pairs of plates in order from least to greatest in terms of the work done to move the electron?

Listed following are various physical situations that describe how light interacts with matter. match these to the appropriate category. 1) transmission? -visible light meets clear glass -visible light does not pass through a black wall -red light hits a red sweatshirt -light comes from your computer screen -cell phone signals pass through walls -blue light hits a red sweatshirt -white light hits a white piece of paper -light comes from a light bulb