Nitrogen gas at 672k is taken in a thermally insulated vessel. what is the rate v in km/s with which it flows out into vacuum through a small hole. the flow rate of gas inside the vessel is negligible. a) 2km/s b) 3km/s c) 1km/s d) 0.5km/s

Which situation will produce the greatest change of momentum

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?

Match these items. 1. coulombs __force 2. ohms __emf 3. centimeters __resistance 4. newtons __charge 5. volts __length