A computing system processes 1000 tasks in a day. On average, each task spends 20 seconds in the system. Calculate the response time for these tasks. |

(Transportation) Road construction requires estimating the expected loads on a road’s pavement over its design life. A common approach for determining this information is to use ESAL values; one ESAL is the load a single 18,000-lb (80,000 N) single-axle truck applies to the road’s surface. The ESAL value for any single-axle vehicle can be approximated by this formula: ESAL=[W18,000]4 ESAL is the equivalent single-axle load. W is the vehicle’s weight (lbs). Using this formula, write, compile, and run a C++ program that determines ESAL values and use it to complete the following chart. The ESAL values should be output in a field width of 10, with six digits after the decimal point.

(Heat transfer) The formula developed in Exercise 5 can be used to determine the cooling time, t, caused only by radiation, of each planet in the solar system. For convenience, this formula is repeated here (see Exercise 5 for a definition of each symbol): t=Nk2eAT3fin A=surfaceareaofasphere=4r2 N=numberofatoms=volumeofthespherevolumeofanatom Volume of a sphere sphere=43radius3 The volume of a single atom is approximately 11029m3 . Using this information and the current temperatures and radii listed in the following chart, determine the time it took each planet to cool to its current temperature, caused only by radiation.

The Bureau of Labor Statistics forecasts an increase of __________ new computing jobs in the time period 2012 to 2022. a. .12 million b. .5 million c. 1.0 million d. 1.2 million

Operating systems are a widely recognized example of system software.

(Data processing) a. A national medical testing laboratory wants a new computer system to analyze its test results. The system must be capable of processing each day’s results as well as retrieving and outputting a printed report of all results meeting certain criteria, such as all results for a particular doctor or for hospitals in a certain state. Determine three or four major program units into which this system could be separated. (Hint: One possible program unit is “Prepare Daily Results” to create each day’s reports.) b. Suppose someone enters incorrect data for a test result, and the error is discovered after the system has entered and stored the data. What program unit is needed to correct this problem? Discuss why such a program unit might or might not be required by most systems. c. A program unit has been developed that allows users to change data that has been entered and stored incorrectly. Discuss the need for including an “audit trail” that would allow reconstructing the changes later as well as when they were made and who made them.

Software companies are continually improving programming languages. Would learning a programming language in grade school provide you with skills that you would need more than a decade later when you enter the workforce? Why or why not?

(Electrical eng.) You’ve been asked to write a program that outputs the following specifications: Voltage amplification: 35 Power output: 2.5 watts Bandwidth: 15 KHz a. For this programming problem, how many lines of output are required? b. How many inputs does this problem have? c. Determine a formula for converting input items into output items.

The major components of a CPU are the __________, __________, and __________.

(Practice) You’re given the task of wiring and installing lights in your attic. Determine a set of subtasks to accomplish this task. (Hint: The first subtask is determining the placement of light fixtures.)