Part 4: UNDERGRADUATE STUDENTS ONLY: The following two equations were taken from

Question

Part 4: UNDERGRADUATE STUDENTS ONLY: The following two equations were taken from literature. The units of the equation quantities are labeled 'old', convert the equations to use 'new' units 4 points each) Procedure: To do this make sure to a) check the equations for dimensional and unitary homogeneity. b) If an equation is not homogeneous change the appropriate constants such that the equation is correct when using the 'new' units-see appendix A.3 and the modified equation should be in exactly the same form as the original, with only the appropriate constant values changed. In this case the constants should have the same number of significant figur es. (12 Points) lustructions for equation conversion are given in section A.3. Conversion factors are from table A.2.

Explanation / Answer

1 cal/day = 0.000048 watts

Now,

Rn = 0.83 (cal/ cm^2.d) = 0.83×0.000048×10^4 (watt/m^2)

= 0.3984 watts/m^2

Again,

Kin = 54 cal/cm^2.d = 54× 0.0048× 10^4

=25.92 W/m^2

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