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I would like some help with 8 physics problems and for someone to show me how to show me how to solve each one

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I would like some help with 8 physics problems and for someone to show me how to show me how to solve each one. Each question has multiple parts. Please be knowledgeable about waves and oscillations, fluids, electromagnetic, and other basic physics topics. I also have notes/compiled a list of equations. I can use other formulas but I would need it explained to me please. Thank you very much and looking forward to working with you

(no submitted work on this page) 5. (13 pnts) Air flow in tunnels #$ Possibly useful numbers: air viscosity ! = 1.8 ' 10!" % ' , air density ) = 1.2 #$ %! Prairie dogs build extensive underground tunnels in the plains of North America that can reach 10 m in length and 3 m deep. It has been observed that the difference in air speed above each entrance caused by the mound shape leads to a pressure difference PB - PA between the two entrances. Let’s model a typical tunnel as cylindrical tubes of uniform diameter as shown here. Refer to the figure below for the tunnel dimensions. PA PB Radius = 0.095 m 3.0 m 10 m a. (4 pnts) If the wind speed above entrance A is vA = 2.4 m/s and above entrance B is vB = 1.2 m/s , use Bernoulli’s equation to predicted a value for the pressure difference PB – PA. State any major assumptions you make in this estimate. b. (6 pnts) On average, the air in a tunnel is exchanged in about 10 minutes. Find an implied average flow rate in m3/s through this tunnel as well as the flow rate value Poiseuille’s equation predicts using the pressure difference found in part a. In a sentence, what do you conclude by comparing these two numbers? IF you did not solve part a, assume PB – PA = 5.6 Pa. c. (3 pnts) As discussed in class, Bernoulli and Poiseuille’s equations are only fully valid when there is no turbulence. Is this likely for the situation where air in the tunnel is exchanged in 10 minutes? All needed parameters are listed above. IF you did not solve part b, assume a flow rate of 1.24x10-3 m3/s. 11 6. (10 pnts) Charges in a membrane (no submitted work on this page) Possibly useful numbers: k = 9.0 x 109 kg m3/ s2 / C2 We discussed how a cell membrane can be modeled as a parallel plate capacitor. Imagine a spherical cell of average radius R=1.2 x10-5 m that has 120 mV of potential difference across its membranes where the membrane spacing d