Wispy, feathery clouds made mostly of ice crystals that form at high altitudes, usually above 6 kilometers.

Use the table to answer question 22 23 and 24.

Two point charges are on the y axis. a 3.90-µc charge is located at y = 1.25 cm, and a -2.4-µc charge is located at y = −1.80 cm. (a) find the total electric potential at the origin. v (b) find the total electric potential at the point whose coordinates are (1.50 cm, 0). v

Avoltaic cell converts chemical energy to