The "uc" is micro coulombs. i need to find the distance (r), i have the charges and force. #electrostatics

Answer asap! the weather patterns on earth are shown in this image. explain why there are convection currents; why there are hotter and colder parts of earth.

An object is 10. cm from the mirror, its height is 3.0 cm, and the focal length is 2.0 cm. what is the image height? (indicate the object orientation by including the + or - sign with the answer.) hi = cm +1.33 -1.33 +0.75 -0.75

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2