particle with a charge of 5.5x10^-6 is 3.5cm from a particle with a charge of -2.3x10^-8c. The potential energy of this two particle system relative to potential energy at infinite separation is

Three point charges, two positive and one negative, each having a magnitude of 20 μc are placed at the vertices of an equilateral triangle (30 cm on a side). what is the magnitude of the electrostatic force on the negative charge

4. who was the first one to measure the speed of light and conclude that it is finite? 5. who was the first philosopher who thought the speed of light is finite? 13. what is the speed of light numerically? 14. give an example of something moving faster than light 15. give an example for some particles or waves that

Which is not true about oxygen-17 and oxygen-18?