Consider a relation s(a, b) having 7 tuples such that 70 tuples fit into one disk block. suppose you can use 7 disk blocks in the buffer for sorting. give an estimate of the number of block ios needed for external merge sort on s

When the pc version of the spreadsheet program became available, the ibm pc quickly became the top-selling personal computer?

Write a function balancechemical to balance chemical reactions by solving a linear set of equations. the inputs arguments are: reagents: symbols of reagents in string row array products: symbols of products in string row array elements: elements in the reaction in string row array elcmpreag: elemental composition of reactants in two dimensional numeric array elcmpprdcts: elemental composition of prducts in two dimensional numeric array hint: the first part of the problem is setting up the set of linear equations that should be solve. the second part of the problem is to find the integers from the solution. one way to do this is to mulitiply the rational basis for the nullspace by increasing larger integers until both the left-and right-side integers exist. for example, for the reaction that involves reacting with to produce and : reagents=["ch4", "o2"]; products =["co2", "h2o"]; elements =["c","h", "o"] elcmpreag=[1,4,0;

Based on the current economic situation do you expect the employment demand for graduating engineers to increase or decrease? explain the basis for your answer. with a significant economic recovery, what do you think will happen to future enrollments in graduating engineering programs?