A 150 kg mass is suspended by a spring-damper combination with a stiffness of 30 103 N/m and a viscous-damping constant of 1500 N s/m. The mass is initially at rest. Calculate the steady-state displacement amplitude and phase if the mass is

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Aplane travels 1000 miles in 5 hours .what is the planes average speed?

Consider a one meter long horizontal pipe with a constant 100 cm^2 cross sectional area. water flows rightward into the pipe at x = 0 with flow velocity 02m/sec at every point within the pipe intake area. at x=1, the rightward flow rate is 0.192 m/sec. assume the water is a conserved quantity in the pipe, so there must be a leak (a sink) somewhere in the pipe. 1. compute net volumetric flow of the source if the system to be in equilibrium. 2. now assume the pipe in the problem has no leaks. compute the net volumetric rate of change for the system.