Propane gas (C3H8) and air enter a constant pressure combustor at 7 celcius and 1 atm. The mass flow rate of propane is 0.005 kg/min and 50% excess air flows into the combustor. What is the air-to-fuel ratio?

10 newton object is placed 3 meters from the fulcrum. at what distance on the other side would you need to place a 15 newton object to balance the lever? show your work!

The magnetic field inside a superconducting solenoid is 4.50 t. the solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. determine (a) the magnetic energy density in the field and (b) the energy stored in the magnetic field within the solenoid.

Which of these is the best way to manage a natural resource