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.

Which statement is true for light passing into a medium that is more optically dense than the first medium through which it past

The arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s . 1.) a. precipitation b. water vapor c. icy debris 2.) a. gravitational compression b. biochemical cycling c. radiogenic heating 3.) a, gravity b. magnetic field c. heat energy for plato

It is really hard for me right know