Acargo elevator on earth (where g = 10 m/s2) lifts 3000 kg upwards by 20 m. 720 kj of electrical energy is used up in the process. what is the efficiency of this process?

Jasmine is diving off a 3-meter springboard. her height in meters above the water when she is x meters horizontally from the end of the board is approximated by the equation h=-x^2+3x+3. what is the maximum height jasmine will reach on her dive?

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

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer