Nitrogen, can can be assumed to behave as an ideal gas flows through a rectangular duct with a cross-sectional area of 0.01m2. at the inlet, the gas has a velocity of 1m/s, a temperature of 30 c, and a pressure of 100kpa. there is a slight pressure drop across the length of the duct to 90kpa find the following (a mass flow rate [kg/s] at the exit (if you cannot, explain) (b volumetric flow rate [m3/s] at the exit

The 10-kg double wheel with radius of gyration of 125mm about o is connected to the spring of stiffness k = 600 n/m by a cord which is wrapped securely around the inner hub. if the wheel is released from rest on the incline with the spring stretched 225 mm, calculate the maximum velocity v of its center o during the ensuing motion. the wheel rolls without slipping

Crowbar of 5 metre is used to lift an object of 800 metre if the effort arm is 200cm calculate the force applied

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct