Use ampere’s law to find the magnetic field (a) inside and (b) outside of a long straight cylinder of current with current density j and radius r. remember that j = i/a. when indicating the direction, describe it as clockwise or counterclockwise when looking at the wire with the current going away from you.

How many molecules are present in 3 mols of silicon dioxide (sio2)?

Atwo-stage air compressor operates at steady state, compression 10m^3/min of air from 100 kpa and 300k to 1200 kpa. an intercooler between the two stages cools the air to 300k at a constant pressure of 350 kpa. the compression processes are isentropic. a) calculate the power required to run the compressor, in kw b) compare the result to the power required for isentropic compression from the same inlet state to the same final pressure.

9.98 kg of r-134a at 300 kpa fills a rigid container whose volume is 14 l. determine the temperature and total enthalpy in the container. the container is now heated until the pressure is 600 kpa. determine the temperature and total enthalpy when the heating is completed. use data from the steam tables.