Amicrophone is attaced to a spring that is suspended from
theceiling. directly below on the floor is a stationary 440
hzsource of sound. the microphone vibrates up and down insimple
harmonic motiono with a period of 2.0 s. the
differnce between the maximum and minimum sound frequenciesdetected
by the microphone is 2.1 hz. ignorign anyreflections of sound in
the room and using 343 m/s for the speed ofsound, determine the
amplitude of the simple harmonic motion.

How are momentum and impulse related? impulse is a whim to do something, while momentum keeps it going impulse is another name fore instantaneous momentum the impulse acting on and object is equal to the change of momentum it causes. the impulse that acts on and object is the momentum that results.

Two horizontal plates with infinite length and width are separated by a distance h in the z direction. the bottom plate is moving at a velocity u. the incompressible fluid trapped between the plates is moving in the positive x-direction with the bottom plate. align gravity with positive z. assume that the flow is fully-developed and laminar. if the systems operates at steady state and the pressure gradient in x-direction can be ignored, do the following: 1. sketch your system 2. identify the coordinate system to be used. 3. show your coordinates and origin point on the sketch. list all your assumptions. 5. apply the continuity equation to your system. nts of navier stokes equations of choice to your system 7. solve the resulting differential equation to obtain the velocity profile within the system make sure to list your boundary conditions. check units of velocity 8. describe the velocity profile you obtain using engineering terminology. sketch that on the same sketch you provided in (1). 9. obtain the equation that describes the volumetric flow rate in the system. check the units.

What are the factors that affect the resistance of a wire?