Air is contained in a cylinder device fitted with a piston-cylinder. initially, the air is at 100 kpa and 23ºc and occupies a volume of 0.25m³. at this point, the piston rests on a set of stops. if a pressure of 200 kpa is required to move the piston from its position on the stops, determine the amount of heat in transferred to the air, in kj, for the air temperature to rise a final temperature of 700 k (from the initial conditions). assume air has constant specific heats evaluated at 300 k.

Sunidhi made a study chart about changes in states of matter. which headings best complete the chart?

4. now look at the green lines you created by connecting the three boiling point data points and the three melting point data points. for each of these lines, describe any trends you see. 5. locate the elements on your periodic table that you circled in green on your graph. what term or description would you use to identify these elements with respect to the periodic table? 7. using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. explain your answers.

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: