Master Engineering with Fun Quizzes & Brain Teasers!

a 120-m long copper wire (resistivity = 1.68x10^-8 *m) has a resistance of 6.0 . what is the diameter of the wire?
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int sum = 0; for(int i = 10; i > 0; i -= 3) { sum = i; } system.out.println(sum); what value does the preceding fragment display?
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T/F. Groundspeed is important in flight planning for determining how long it will take an aircraft to reach its destination.
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a high-frequency ultrasound probe has a half-value thickness of 0.5 cm for muscle tissue. what fraction of the power reaches tissue at a depth of 2cm?
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1. Given a binary code, determine the number of errors that it can detect and the number of errors that it can correct.2. Given a binary code with minimum distance k, where k is a positive integer, write a program that will detect errors in codewords in as many as k 1 positions and correct errors in as many as (k 1)/2 positions.
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Consider 100 kg of steam initially at 20 bar and 240 degrees C as the system. Determine the change in exergy, in kJ, for each of the following processes:(a) The system is heated at constant pressure until its volume doubles.(b) The system expands isothermally until its volume doubles.
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in 1903, aegidius elling of norway designed and built an 11-hp gas turbine that used steam injection between the combustion chamber and the turbine to cool the combustion gases to a safe temperature for the materials available at the time. currently there are several gas-turbine power plants that use steam injection to augment power and improve thermal efficiency. for example, the thermal efficiency of the general electric lm5000 gas turbine is reported to increase from 35.8 percent in simple-cycle operation to 43 percent when steam injection is used. explain why steam injection increases the power output and the efficiency of gas turbines. also, explain how you would obtain the steam.
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given: a variable named incompletes that refers to a list of student ids, and a variable named student id that has already been assigned a value write some code that counts the number of times the value of student id appears in the incompletes list, and assigns this value to number of incompletes. you may use, if you wish, an additional variable, k. you may use only k, incompletes, student id, and number of incompletes in your code.
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4. the answer to these questions should clarify in your mind which resistors are in series and which resistors are in parallel. you can begin solving for the currents and voltages in the circuit by replacing resistors that are either in series or in parallel with an equivalent resistor. in this case, begin by replacing r2 and r3, with an equivalent resistor labeled r2,3. draw the equivalent circuit in the space provided. show the value of all components including r2,3
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The following program compares two ASCII character strings of the same length. One string starts in memory location x5000, the other starts in memory location x6000. The characters are stored in a sequential series of memory addresses, and the last such address contains an ASCII NUL x00 (used as sentinel). If the strings are the same, the program terminates with the value +1 in R0, otherwise the program ends with the value -1 in R0.Insert the missing instructions in the code below. You do not need to submit the program, only the missing instructions, referring to their respective number..ORIG x4000___________________ ; Insert instruction a.i) hereLD R1, STRING1LD R2, STRING2NEXTCHAR LDR R3, R1, #0LDR R4, R2, #0BRz EQUAL___________________ ; Insert instruction a.ii) here___________________ ; Insert instruction a.iii) hereNOT R3, R3ADD R3, R3, #1ADD R4, R4, R3BRz NEXTCHARADD R0, R0, #-1___________________ ; Insert instruction a.iv) hereEQUAL ADD R0, R0, #1STOP HALTSTRING1 .FILL x5000STRING2 .FILL x6000.END
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a router has been a working part of a network that uses ospfv2. an engineer then issues the shutdown command in ospf configuration mode on that the router. which of the following occurs?
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Which of the following z-scores is NOT outside the middle 68% of the data for a normal distribution?a.)-2.8b.)3.8c.)1.8d.)-0.8
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error in apply(log(vapply(seq_along(attribs), function(v) { : dim(x) must have a positive length
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Multimedia Systems: Algorithms, Standards, and Industry Practices. Parag Havaldar and Grard Medioni. Executive Editor: Marie Lee.
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an on-site it technician is attempting to resolve an issue with application performance on a customer laptop. the technician backs up the customer data and then replaces the memory in the laptop with known good memory. it does not resolve the performance issue. what are the next two actions the technician should take? (choose two.) continue to test the next likely probable cause. reinstall the original memory sticks. call the laptop manufacturer technical support line. document that the possible solution did not work. escalate the issue to the next level support technician.
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for the uniform beam shown, use superposition to determine the reaction at each of the three supports. assume that the flexural rigidity ei of the beam is constant. (round the final answers to the nearest whole number.)
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for the frame given below, determine all final member end moments using moment distribution. note the different i values for the spans and columns
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will the stock rods always meet the length constraint? explain.
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A programmer notices the following two procedures in a library. The procedures do similar, but not identical,things. Procedure MaxTwo (x, y) returns the greater of its two integer parameters. Procedure MaxThree (x, y, z) returns the greatest of its three integer parameters.Which of the following procedures is a generalization of the MaxTwo and MaxThree procedures?
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write a function called sum_of_cubes that takes two numbers as arguments and returns the sum of their cubes.
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which of the following code segments will move the robot to the gray square along the path indicated by the arrows?
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A computer has four page frames. The time of loading, time of last access, and the R and M bits for each page are shown below (the times are in clock ticks): (2 points)Pageloadedlast refRM012628010123026501214027000311028511a) Which page will second chance replace?b) Which page will LRU replace?c) Which page will NRU replace?d) Which page will FIFO replace?
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When an air traffic controller issues radar traffic information in relation to the 12-hour clock, the reference the controller uses is the aircraft's A) true course B) ground track C) magnetic heading
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for the days when an employee makes a purchase using an mcc that contains the words hotel, motel, resort or inn, return all transaction details about any transactions for those employees who on those days also contain mccs that have the words food or restaurant. sort them in ascending order by name and then the amount. alteryx
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