She has found the arrival times of the P-waves and S-waves. She wants to calculate the time difference between the two waves. Which calculation should Sandra make? A)P-wave arrival time plus S-wave arrival time
B)P-wave arrival time minus S-wave arrival time
C)S-wave arrival time plus P-wave arrival time
D)S-wave arrival time minus P-wave arrival time

Select all of the following that are equal to an impulse of 20 unitsa) force= 5, time= 5.5b) force= 25, time= 0.8c) force= 0.1, time= 200d) force= 10, time= 2(its b, c, and d)(also in order to find answer they have to add to get the unit)ex= 25x.8=20 or .1x200=20

What is the equation for electrical work?

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)