Two positive charges are seperated by 12 cm. the force thatq1 exerts on q2 is 4×10 ^8n. what is this force if the distance between the two charges is reduced to 9cm?

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

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat

Tall pacific coast redwood trees can reach heights of about 100 m. if air drag is negligibly small, how fast is a sequola cone moving when it reaches the ground f it dropped from the top of a 100 m tree?