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Engineering
Engineering is an art and profession devoted to designing, constructing, and operating the structures, machines, and other devices of industry and everyday life.
5,839 Questions
Why is it difficult to collect requirements?
Its not difficult if you invest the time and energy to make it work. Are you doing the exercises? Are you understanding what the teacher is saying, or are you leaving class mystified? Are you participating in class discussion or are you busy texting your girlfriend?
Its like any other coursework. You need to study, and that means work.
What is a sanitation department?
The department that relates to hygienic principles and conditions. They employ officials to make regular inspections of local drainage and plumbing systems
What is the relationship between Rittinger's law Kick's Law and Bond's Law?
A detailed explanation of the equations is here: http://www.nzifst.org.nz/unitoperations/sizereduction1.htm. In simple terms, Rittinger's law is a high-end estimate of the energy required to grind something, excluding any losses to heat etc. Kick's law is a low-end estimate, and Bond's Law is a mid-way estimate.
this is totally a personal preference. i love my very short FORCE FINS but others love their very long freeDiving fins. many factors influence a person fin preference because of individuals swimming preference, FORCE FINS use more of the calf muscle similar to short bicycle strokes, whereas a paif of long freeDiving fins use more of the whole leg.
if you ask me; FORCE FINS
if you ask my dive buddy: Apollo Bio-fins
somebody else; a completely different answer
in general though, universally; the SCUBAPRO JET FINS is the most powerful fin
What are the types of tool post?
the types of tool post on lathes can be classified as
single screw tool post
four bolt tool post
open side tool post
four way tool post
Calculating the weight of a cylinder?
The mass of a cylinder would be the volume times the density of the material it is made of. Therefore, where m = mass, r = radius, h = height, and ρ = density:
m = πr2hρ
The mass would correspond to the weight 1:1 on Earth and that would be the final answer. If the object is under a different gravity situation, the weight will need to be adjusted accordingly.
It is determined through measurement and temperature.
SMD = Surface Mounted Device.
The legs and contacts on the device are designed to be soldered onto the surface of the circuit board, on the same side as the device.
It provides for a smaller profile and designed for attachment by automated processes.
Why is an ntfs system more secure than fat32?
Actually, The way that NTFS is used by most persons is LESS secure than FAT32- Here is why-
NTFS has "A relatively unknown compatibility feature", called Alternate Data Streams (ADS). Microsoft claims it was originally developed to be compatible with Mac systems... That use seems long past considering the fundamental changes to the Mac OS and equipment parity developed in recent years...
ADS provides hackers (and unscrupulous companies, agencies and governments) with a method of hiding; root kits, hacker tools or any other information / programs. This data can very possibly be executed without being detected by the systems administrator and / or MANY of the security tools in general use now.
Yes that's correct - If used properly NTFS is a much better file system, but in this day and age where the boundaries between ad-ware and malware are blurred and when keeping digital products such as software is so difficult, NTFS is NOT used correctly by most home users or by many other "professional users".
There are also seemingly safe software goods and products that at best can carry out hidden functions such as ID checking or program disablement to combat piracy. At worst these implementations can and have caused countess problems and data loss.
Remember this hidden forked data can be put anywhere so a digital photo or song can also contain or later have added "alternate data streams". The file appears the same and is reported to be the same size with or without this extra stream.
Governments are also known to use this "feature" - There are legitimate uses for this file system feature, but I question why there is such little knowledge of even the existence's of alternate data streams by the general population
This probably sounds like science fiction to some reading this, and it is a very biased view. My view is biased by what I've personally seen over the last 12+ years
Google NTFS alternate data streams and take a peek, then get your hands some software that allows you to check for this type of information on your NTFS files.
ADS is there, much of it is "ligit" - so use a program that will at least assist you in detecting "Questionable" information, for instance your personal information hidden in a photo or a song or somewhere you know you didn't put it or want it to be or executable files...
These equations were put forward by Bogue to calculate the potential composition of cement (based on content of different oxides). These are:-
C3S = 4.07 CaO - 7.60 SiO2 - 6.72 Al2O3 - 1.43 Fe2O3 - 2.85 SO3
C2S = 2.87 SiO2 -0.754 (3 CaO.SiO2)
C3A = 2.65 Al2O3 - 1.69 Fe2O3
C4AF = 3.04 Fe2O3
(above equations only valid when A/F ≥ 0.64 )The force required to cause the yielding of the solidis called the yield force.
What observations led Czarnowski to form his hypothesis about marine propulsion?
MIT researcher James Czarnowski made observations of penguins swimming. He observed how quickly and easily the penguins moved through the water. By 1997, he had designed a "flapping" propulsion system that was more efficient than propellers.
A nummy is a fringe. Steph's fringe actually, normally if you go up to someone and poke their fringe asking 'what's that?' they should say in this really sweet & innocent voice: 'nummy'. Also, pointing to their hands might make them say 'num num'; just in case you were wondering.
Difference between module testing and unit testing?
unit tests are a collection of tests written by a developer during the software development process. Module tests are a collection of tests written by a tester after some code has been written by a developer.
As long as your bellows has an intake port - a small opening through which air can enter - they will never run out. Think of it this way, your mouth is an intake port. Each time you breathe the (free) air, your chest fills. Each time you open the bellows, it fills.
Why a linear transformer is called linear?
That is because they are of the form
y = a1x1 + a2x2 + ... anxn where x1, ... xn are variables and a1, ..., an are constants.
Such an equation represents a straight line in n-dimensional space.
Removal, Classification, Identification
800 milliwatts, or 0.8 watt. It's a measurement of output power or power consumption.
How do you get the length of a square corner to corner?
measure one side of the square then multiply by 1.414 ex. a 10 in. square will have a corner to corner length of 14.14 in.
What is combined services drawing?
A Combined Services Drawing, or CSD, is used in construction. It is an illustration that provides a visual way to look at proposed development plans.
It depends on the periodic time of the supply which, in turn, is determined by the supply frequency. So, work out the periodic time of a 50 or 60-Hz waveform, and go from there.
