3. Explain the purposes of constructing a cross section.4. What are common sources of error in cross sections?
408534
In the field of land surveys, cross-sections and profiles are used to estimate earth volume for the purpose of materials/resources needed to develop land or build roads.\n\nA Common error would be to not establish a frequent enough pattern to provide an accurate estimate for a land area with many changes in elevation.
342237
Basic Problem Solving technique.\nTo identify the real cause or root of a problem. For the engineer to understand this will allow him/her to improve the design.\n\ni.e. A car stops producing heat for the occupant. After checking the coolant supply which heats the heater core which air is blown across it is determined there is no coolant moving into the core. Further discovery the control valve is not working. One would stop here and just replace the valve. The engineer continues to research the problem with the vacuum driven diaphram to determine there is debris obstructing its movement. Why, because the valve is exposed to the rain/snow/salt (root cause) from the road. A new design helps to protect the valve from such common elements.
227728
Very simple. start out asking yourself what information do i know about the problem. Anything from masses and forces to symmetries of the problem. Next Ask yourself what additional information you need to solve the problem, values, formulas, etc. from there it should all fall out with ease.
1089498
Many compilers do this.\n\nThey point not to the source of the error but the first spot where there is an actual problem.\nThis is usually the line after the source of the error.  The error points to the beginning of that line instead of the end of the previous.
177983
simple chk out:\n\nhttp://www.cplusplus.com/doc/tutorial/structures.html
1146144
75% is 3/4. So you can miss a maximum of 12.\n\n50/4=12.5 \n\nAssuming they keep 12 wrong as passing and 13 as failing the most you could therefore miss is 12.
426265
Sure, I do.\n\nStep one: identify your question.\n\nStep two: figure out as much as you can about the phenotypes of the parents and the offspring\n\nStep three: some of the genotypes may be obvious from the phenotypes. \n\nStep four: figure out what kind of gametes an individual can make. \n\nStep five: Are you in control of any crosses? Or are the crosses already done? \n\nStep six: If there is any need, do Punnett squares of those crosses you can't just figure out by looking.
915221
- How many links should be strung together to form a chain?\n\nNumber of links = 54/0.5 = 108\nsd = 108 * 0.01 = 1.08\n\nSo mean length (μ) of 108 links = 54" with a sd (σ) of 1.08"\n\n- What proportion of the chains would meet BD's standards?\n\nz = (x - μ)/σ + 0.5\n= (54.25 - 54)/1.08 + 0.5\n= ~0.7315\n\nFrom a table of z-scores establish the proportion that would lie above the mean and double it for those that lie below the mean.\n\nP(-∞ to 0.7315) ≈ 0.617 (Ref Table 1)\nTherefore P (-0.7315 to 0.7315)\n≈ (0.617 - 0.5)*2\n= 0.117 *2\n= 0. 234\nie 23.4% of the chains will meet the standards and 76.6% of chains fail\n\n- Supposed BJ Company wished to reduce the proportion of chains that failed to meet Bridgestone’s standards to one third the current value to what value would they have to change the standard deviation of the length of the individual chain links?\n\nif only 1/3 fail (1/6 too long and 1/6 too short) then 2/3 pass and so want to establish z for p ≈ 0.5 + 0.333 = 0.833\n\nFrom table (See Ref 1)\nz ≈ 0.7975\n\nSo 0.7975 = (54.25 - 54)/σ + 0.5\n0.25/σ = 0.2975\nσ = 0.25/0.2975\n= 0.84 inches for the 108 links\n= 0.0039 inches per link
911041
1. (3/51 * 2/50 * 1/49) * (3/47 * 2/46) * 7!\n2. (3/51 * 2/50) * (3/48) * (3/46) * 45/47 * 7!\n3. (3/51 * 2/50 * 1/49) * (3/47) * 44/46 * 7!\n4. (3/51 * 2/50) * (3/48 * 2/47) * 45/46 * 7!\n5. (3/51) * (48/50 * 3/49) * (44/48 * 3/47) * 40/46 * 7!\n\nNote: As I read it, #2-#4 exclude the possibility of #1.  If you think #1 is a special case of the others, then add the value of #1 to the other three.  Likewise, as I read it, #5 excludes #2.
1100234
There are two types of errors. One human error another instrumental error. \nWe know the accuracy of measurement of instruments. \n\nAny error in the result must be within this instrumetal error.\n\nHuman error must be eliminated in total. \n\nThis can be done only by repating the experiment.\n\nAny result which is not within the instrumetal error must be totaly rejected and we find the mean value of the results which are within the instrumental errors
84704
What equipment?\nWhat experiment?\nWhat error?
46275
the goal is to make the total amount of atoms on each side equal\n\nso you add coeficients to the front of molecules (which is multiplied by the little numbers on bottom) and see if you can get the same number on both sides. its kind of hard sometiems if you dont see it.
466776
Statistics studies, among other things, deviations from normals and can help to explain errors (as well as help explain how errors are propagated and where their sources can be).\n\nFor example, if you have a numerical amount with an error and you multiply that value by something known and constant (like conversion from USD to Euros, for example), that error will be multiplied by that conversion rate.\n\nStatistics uses error calculation such as standard deviation (how much a value can vary from the average amount) and goes very far into detail about sums of errors etc. and how they affect averages, errors, and final values.\n\nAdditinoally, there are some formulae that are used all throughout the sciences that can be applied to accounting, and those sciences use statistics, again, to calculate errors.  For example, growth and decay of a radioactive substance has a certain formula that uses exponential (e to the power of something), but this is also used to calculate economic growth rates and can be applied to the stock market (it can also be used to explain traffic jams and other civil engineering problems).
348214
1.  not enough info\n2.  conduction?\n3.  conductor\n4.  resistance
1001544
Firstly, you have to understand the question and then analyse it. What points are expected of you? you can also underline or highlight important phrases such as describe, contrast etc. \nThese will help you in answering the question as they work as guidelines which you can refer to and know what exactly they are asking you for. As such, its hard for you to go wrong...hope that helps!
416430
There are various means of determining this, and without any specific data on what elements are involved in the answer you are looking for, the link below is the best reference I can find that can answer this question in a mostly generalized way.
726789
What are the co-ordinates of the other point? just use the midppint formula for a segment. All the best!\n\nLife's Lovely! Love & Live Life!