Object 1 starts at 5.4m and moves with a velocity of 1.3m/s. Object 2 starts at 8.1m and moves with a velocity of -2.2m/s. At what time will these two objects collide. * PLEASE A GOOD ANSWER. IM NEED HELP RN

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

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

You hang a book bag on a spring scale and place the bag on a platform scale so that the platform scale reads 23.7n and the spring scale reads 13.8n. what is the magnitude of the force that earth exerts on the bag?