Apiece of cloth is dated using carbon-14. the cloth is determined to be 1400 years old. the half-life of c-14 is 5730 years. the c-14 radioactivity in the cloth will be the radioactivity in a new cloth.

Three point charges, two positive and one negative, each having a magnitude of 20 μc are placed at the vertices of an equilateral triangle (30 cm on a side). what is the magnitude of the electrostatic force on the negative charge

Which statement best explains why an object weight less on mercury than it does on earth

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