Design 6th order Butterworth band-pass filter with cut-off frequency is 4KHz and 7KHz and pass-band gain is 20dB Draw the circuit, write the transfer function of the filter, and sketch a frequency spectrum of the filter and show the cutoff frequencies on the spectrum

Hydraulic fluid with a sg. of 0.78 is flowing through a 1.5 in. i.d. pipe at 58 gal/min. the fluid has an absolute viscosity of 11.8 x 105 lbf-sec/ft2. is the flow laminar, turbulent or within the critical range? give both a numerical reynolds number and a term answer.