It is found that the energy required to reduce particles from a mean diameter of 1 inche to 0.3inche is 11 kJ/kg. Estimate the energy requirement to reduce the same particles from a diameter of 0.1 in to 0.01 assuming: (a) Kick's Law, (b) Rittinger's Law, (c) Bond's Equation Comment on your results

The plot to the right shows the 1-D steady-state solution to the Pennes bioheat equation with T = 37°C at x = 0 (body core) and T = 43°C at x = 0.01 (body surface). The thermal conductivity is 0.5 W m-l °C-'. This scenario describes some surface tissue thermal conductivity (WI(m°C)) 0.5 blood perfusion rate (1/5) T("C) 43 heating (e.g., laser). Which trace represents the highest value of the blood perfusion rate. 42 41 A 40 А. А В. В 39 38 E С.С 0.002 X(m) 0.010 0.004 0.006 0.008 D. D Е. Е

96 Q3/ The bulk volume of the core sample is 150 cm³ and its porosity 18%. The pore compressibility of this sample is 7 *106 psi -¹,what would be the porosity of this sample if it pressurized with 7600 psi ?

Q2:. (a) For a free electron with a velocity of lo7 cm/s, what is its de Broglie wavelength. (b) In GaAs, the effective mass of electrons in the conduction band is 0.063 mo. If they have the same velocity, find the corresponding de Broglie wavelength.