If an elephant has a net force of 10000 N downward while experiencing an upward force of 9000 N from air resistance, what is the elephant's gravitational force downward? -1000 N, downward
-20000 N, downward
-19000 N, downward
-0 N, the forces are balanced

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

The material that keeps its new shape after it is stretched is called?

Estimate the schwarzschild radius (in kilometers) for a mini-black hole formed when a superadvanced civilization decides to punish you (unfairly) by squeezing you until you become so small that you disappear inside your own event horizon. (assume that the your weight is 50 kg)