Use MATLAB to record 10 seconds of your speech using a sampling frequency of 8000Hz(see: audiorecorder in MATLAB and record in Octave). Explain what is happening atthe hardware level when you record your speech (a continuous signal) to store it in yourcomputer (i. e., explain the steps involved in the sampling and quantization process).

Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.

The higher the astm grain size number, the finer the gran is. a)-true b)-false

Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?