Find the annual heat loss if u-value of windows is given
The building has 25 windows each with 8 ft2 area. The U-value is 0.4 Btu/(hr ft2°F). In the region with 7000 heating degree days annually, find the annual heat loss.
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Derive from part (i) that for all n in N, there exist n consecutive positive integers which are not prime, that is, set of prime integers has arbitrarily large gaps.
Illustrate that inverse of the elementary matrix is also the elementary matrix. Illustrate that the matrix is invertible if and only if it can be written as the product of elementary matrices.
Determine the polynomial of form a + bx + cx2 that passes through points (1,0), (2,1) and (3,1). Illustrate that given any three points P, Q and R in R2, no two of which are vertically aligned.
he air conditioning system requires to bring air at 73 °F and 80% relative humidity (17 g water/kg air is saturated) to 55 °F at 100 % relative humidity (10 g water/kg air is saturated) at the input rate of 2 m3/s.
An automobile manufacturer would like to know what proportion of its customers are not satisfied with the service provided by the local dealer. The customer relations department will survey a random sample of customers and compute a 99% confidence
A psychologist is investigating hypothesis that children who grow up as the only child in household develop different personality cgharacteristics than those who grow up in larger fsamilies. A sample of n=30 only children is obtained and each chil
Suppose its heating source is 65% efficient. How much money saved on the annual basis suppose that natural gas price is $0.65/therm by increasing to R- 12?
Montarello and Martins found that fifth-grade students completed more mathematics problems correctly when simple problems were mixed in with their regular assignments. To further discover this phenomenon, assume that the researcher chooses a stand
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