A section of a rollercoaster track involves an arc, as shown below: If the fastest the carriage can traverse this section of the track without its wheels losing contact is 8.50m⋅s−1, what is its radius of curvature? Give your answer in meters to three significant figures, without including a unit.

Which would not reduce the amount of green house gasses in the air

Aballet student who learns with the of his instructor is demonstrating learning.

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