A thundercloud has an electric charge of 43. 2 c near the top of the cloud and –38. 7 c near the bottom of the cloud. The magnitude of the electric force between these two charges is 3. 95 × 10^6 n. What is the average separation between these charges?.

If (a, b) is the solution to the system of equations shown above, and a and b are integers, then what is the value of a+b?

Technological solutions have good bad effects. what is one bad effect of spraying a chemical pesticide on crops

In the image, layer a is the topmost layer. layer c contains fossils from the precambrian era. layer b contains dinosaur fossils, and layer a contains fossils of mammals. which two statements are supported by this evidence? 1. mammals lived before the precambrian era. 2. dinosaurs and mammals existed in the precambrian era. 3. dinosaurs evolved after precambrian organisms. 4. precambrian organisms evolved after dinosaurs. 5. precambrian organisms were the first life-forms to become fossilized, according to this sample.