Two positively charged sphoros, each with a charge of 1x10C, with a mass of 10 kg, and separated by a distance of 14 cm, are hold in place on a frictionless track. What is the electrostatic potential energy of this system?

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

The number at the end of an isotope’s name is the number.

How can carbon move from "land" to bodies of water? describe the way human impact has lead to increased levels of co2 in the atmosphere.