Objects 1 and 2 attract each other with a electrostatic force

of 18.0 units. If the distance separating Objects 1 and 2 is

changed to four times the original value (i. e., quadrupled),

then the new electrostatic force will be units.

15. give an example for some particles or waves that are moving faster than light in everyday life 16. what is a laser? 17. what is an oscilloscope? 18. what does it means practically that nothing is faster than light in vacuum? 19. what is vacuum?

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)

Abar magnet cut in half will form a total ofpoles.a)fourb)eightc)two