Select the correct answer. A periodic wave travels from one medium to another. Which pair of variables are likely to change in the process?
O A. velocity and wavelength
OB. velocity and frequency
OC frequency and wavelength
OD
frequency and phase
OE wavelength and phase

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.