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Write the governing equation for the situations you wish to

Take home: complete calculate and finalize using matlab or Mathcad for both problems. If your inclass work was incorrect, repeat those steps as well.

Present each part of your solutions in the following format:

- Assemble (20% of in class score)

State what needs to be found (identify the extensive property to be counted).

Diagram the set-up/situation with a brief description

- Analyze (20% of inclass score)

List assumptions

Identify given (pertinent) information from the problem statement

Provide extra data necessary ( if applicable)

Identify a basis for your solution

Describe the system

Write the governing equation for the situations you wish to solve identifying terms which will cancel or stay

- Calculate (60% of inclass score/80% of take home score)

State governing equation in reduced form with extensive properties of interest

Calculate answers - SHOW ALL WORK/STEPS/CONVERSIONS

- Finalize (20% of take home score)

Formally state your answer with correct units

Draw appropriate conclusions about your answer

Problem statements

1. Consider a cold winter day with an air temperature of 5 C and a relative humidity of about 20% (moisture content 0.001 gm H2O/gm dry air). A person waiting at the bus stop inhales at an average rate of 7 gm dry air/min and exhales air saturated with water at body temperature (37 C) and 1 atm. Assume the heat capacity of dry air is 1.0A J/(gm*degC). Estimate the rate of heat loss by breathing in kcal/hr. Also estimate the rate of water loss in gm/hr. Where A is from your student id number.

2. Proper freezing of AB ml volume reduced cord blood must take into consideration three distinct temperature regions in which the cord blood unit exhibits markedly different thermodynamic properties (above freezing, at freezing and below freezing). Determine the change in enthalpy for AB mL of blood initially at 6 C frozen at -50 C. The specific heat of the blood above freezing (-3 C) is 1 cal/(gm*K). The specific heat of the frozen blood is 0.5 cal/(gm*K). The specific latent heat of fusion for blood is 76 cal/gm. Remember, ABCD are the last four digits of your student id.

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## Q : Solve the system for the least-squares estimates

refferring to fig on page 24100 of the notesgt 5642lectures24pdf consider a set of 5 horizontally infinite cylinders