Apoint charge with charge q1 is held stationary at the origin. a second point charge with charge q2 moves from the point (x1, 0) to the point (x2, y2). use k for coulomb's constant rather than writing it out as (1/4πϵ0).how much work w is done by the electrostatic force on the moving point charge? express your answer in joules. use k for coulomb's constant.

Ahorizontal force of 400.0 n is required to pull a 1760 n truck across the floor at a constant speed. find the coefficient of sliding friction.

Isobars are lines of constant or equal pressure on a weather map. they can be used to find areas of low or high pressure over a broad area, and they can tell us how intense the system may be. on weather maps, you may have noticed areas that have a large l or h over a region with lines circling around them. the l stands for low pressure and h stands for high pressure. the lines circling them are isobars. check out the pressure system and isobars over georgia and florida. what is the present weather in this area ? a) clear and sunny b) cold and cloudy c) changing weather d) lots of precipitation

Is the number of complete movements of a wave per second.