Aresearcher claiming that females were more empathetic than males would test that hypothesis by using statistics.

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

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

What do we mean by the event horizon of a black hole?