An airplane leaves City A and flies due north to City B. It then turns through an angle of and flies to City C. What angle with respect to due north could the pilot have used to fly directly from City A to City C

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

Properties seen when one one substance changes to another are known as properties

Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.