Forces of 80 N at 170 degrees, and 40 N at an angle of 340 degrees, measured counter-clockwise from the positive x-axis, act on an object. What is the magnitude of the resultant force (in Newtons)

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

Atruck with 34-in.-diameter wheels is traveling at 55 mi/h. find the angular speed of the wheels in rad/min, *hint convert miles to inches & hours to minutes:

What practical value did astronomy offer to ancient civilizations?