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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
With an example explain the different string methods in java?
Strings, which are widely used in Java programming, are a sequence of characters. In the Java programming language, strings are objects. The Java platform provides the String class to create and manipulate strings. Creating Strings The most direct way to create a string is to write: String greeting = "Hello world!"; In this case, "Hello world!" is a string literal-a series of characters in your code that is enclosed in double quotes. Whenever it encounters a string literal in your code, the compiler creates a String object with its value-in this case, Hello world!. As with any other object, you can create String objects by using the new keyword and a constructor. The String class has 11 constructors that allow you to provide the initial value of the string using different sources, such as an array of characters: char[] helloArray = { 'h', 'e', 'l', 'l', 'o', '.'}; String helloString = new String(helloArray); System.out.println(helloString); The last line of this code snippet displays hello. Note: The String class is immutable, so that once it is created a String object cannot be changed. The String class has a number of methods, some of which will be discussed below, that appear to modify strings. Since strings are immutable, what these methods really do is create and return a new string that contains the result of the operation.
Shear forces are ranged forces pushing one part of a body in a direction and another part in opposite directions. An example is when you pushed a deck of cards one way at the top and another at the bottom causing the cards to slide.
Is genetic engineering a new science?
Short Answer:
Manipulation of genes has been used by humans in farming & agriculture for hundreds of years.
Longer Explanation:
Genetic engineering in the stictest definition is a fairly new technology. It consists of extracting a gene or genes from a plant or animal and inserting it into another plant or animal, or changing it in some way and inserting it back into the original plant or animal in order to get a desired trait. The most familiar known use of the technology is to develop crops that are resistant to herbicides or plants that produce a substance that kils insects when the plant is eaten by them, though there are lesser-known uses of genetic engineering.
Though some might say that the use of genetic engineering includes the method of hybridization, hybridization is a totally different process that has been used throughout time. Another difference is that hybrids cannot be patented in the same way genetically engineered plants can.
What voltage would be measured across the 45 ohm resistor?
Not enough information. But if you know the current, you can use Ohm's Law (just multiply the resistance times the current).
Theory of RC coupled Amplifier?
In a two stage RC coupled amlifier the rransistor are identical and a common power supply is used.
the output is provided to the first stage of the amplifier wher it is amplified and this output is uses as a input for the sexound stage this is amplified once again by the other transistor in the sexound stage and the final out put is obtain.
What information sources do you use for data and documentation in your work activities?
Most information is sourced via PC and Network nowadays however Technical drawings on paper (also available on PC database) are useful in that they can be taken to the job location. General verbal information is given upon job distribution ie: a job may be discussed with a person who has experience on that particular job.
How much does 1 square meter of water weigh?
Water has a density of 1 gram per cubic centimeter. There are 1,000,000 cubic centimeters in a cubic meter, so 1 cubic meter has a mass of 1000 kilograms.
What are different types of engineering careers?
Engineering is basically applied science. There are lots of jobs in engineering; many of them have "engineering" as part of their name; some don't. Examples include work in computer hardware, computer programming, architecture, economics, and many others. The Wikipedia article "List of engineering branches" lists quite a few, but there are probably more, or you can break them up into more branches.
Please note that any study and work in engineering will require a lot of mathematics and science. Some people like that; some don't.
What qualities should a student possess in order to be an engineer?
creative mind and ethical thinking about society
Most of the fuel is held in the wings. There is a "center wing tank" which is actually under the cabin as well as some models have fuel in the horizontal stabilizer (the "wing" on the tail).
What are the advantages of the manometer pressure-measurement device?
The manometer in its various forms is an extremely useful type of pressure measuring instrument, but suffers from a number of limitations.
- While it can be adapted to measure very small pressure differences, it can not be used conveniently for large pressure differences - although it is possible to connect a number of manometers in series and to use mercury as the manometric fluid to improve the range. (limitation)
- A manometer does not have to be calibrated against any standard; the pressure difference can be calculated from first principles. ( Advantage)
- Some liquids are unsuitable for use because they do not form well-defined menisci. Surface tension can also cause errors due to capillary rise; this can be avoided if the diameters of the tubes are sufficiently large - preferably not less than 15 mm diameter. (limitation)
- A major disadvantage of the manometer is its slow response, which makes it unsuitable for measuring fluctuating pressures.(limitation)
- It is essential that the pipes connecting the manometer to the pipe or vessel containing the liquid under pressure should be filled with this liquid and there should be no air bubbles in the liquid.(important point to be kept in mind)
What are the examples of water resources?
The types of Water Resources are:
- Ground Water
- Springs
- Wells
- Surface Waters
- Lakes
- Streams
- Swamps
That's actually fairly meaningless, 1nm is one nanometre, there are one billion (1 000 000 000) nanometres in one metre. There are 1 609 metres in one mile. The number of nanometres in one mile is to big to be really meaningful.
What is the standard railroad gauge?
The standard gauge for railroads was established in 1886. Cities constructed union terminals to consolidate the various rail lines heading in and out of town. By the 1880's almost one third of the world's railroad mileage was contained in the United States.
Are bacteria mobile or sessile?
Bacterias are mobile ofcourse, because it does not have a special host to live inside the body of a human, after the process of rupturing into the same....... so it takes time to find the host (ie) after entering the human body. After it has found a permanent host inside the human body it stays sessile and continues its process.
Does the mass number equal the same number of electrons?
The atomic mass number does not equal the number of electrons in the element. The atomic number, on the other hand, does usually equal the number of electrons in the element, With the exception of ions.
A composite is any material made of more than one component. Polymer composites are composites made from polymers, or from polymers along with other kinds of materials. For more information, see the Web Links to the left of this answer.
What is the difference between production engineering and manufacturing engineering?
Process engineering focuses on the design, operation and maintenance of chemical and material manufacturing processes. Process engineering also involves developing new processes, project engineering and troubleshooting. Production engineering focuses more on making production more efficient, the social science of manufacturing, eliminating wasted time, money and production as well as materials. Production is more geared towards the people, process, and finished product. Whereas the process involves more of how you get there, what process takes, and not so much the finished product.
What you do after computer science and engineering?
The best course to study is the one that leads to your overall career goals and objectives. Thus, I would imagine you do not have anything specific at this time. So many individuals enroll in college programs without a specific goal in mind. As such, many become miserable in their work which is not good for them, or their employer. If you want to be successful in your work and life, carefully consider the following.
To be successful in your work, you must acquire a vision. A vision is a clearly articulated picture of the future you intend to create for yourself. In other words, it's a dream. However, if the dream does not have direction, it will always remain a dream and will never become a reality for you. That vision should create a passion within you, a love for what you do and the benefit it brings others as well as yourself. Make sure the vision is specific, measurable, attainable, realistic, and tangible. Let us look at this closer. When you believe you have chosen an appropriate career goal, look at it in SMART fashion as follows. * Specific - Make sure your career goal is very specific. For example, "I would like to be a teacher," is not specific. "I would like to be a high school biology teacher in New Jersey (USA) in an urban school by 2012" is. * Measurable - Make sure you can measure your progress. How will I know I am progressing in the right direction? This is where the development of short-term objectives comes in (discussed below). You will know you are on the right path as you accomplish each short -term objective. * Achievable - Is the goal achievable considering my current life situation and circumstances? * Realistic - Is what I want to do really realistic. For example, "I would like to be a middle weight boxing champion, and I am 63 years old." That is not realistic. * Tangible - What will I - specifically - have at the end? What will I be (exactly)? It must be very specific. Once you have that vision your path will become clear. Still, you will need a mentor, counselor, or coach who will be able to help you develop a road map embedded with short term objectives leading to your overall career overall goals and objectives. The achievement of short-term objectives will indicate you are moving in the correct direction, and will also give you energy and excitement to carry on towards your overall career goal. It will take some research, but you most likely have some ideas already. Follow them through, look at the nature of the field, the everyday routine, the required education, the salary, the occupational demand and the related fields. When a career sparks an interest, try to shadow an individual who is actually doing what you think you might like to do. You can pick up valuable information this way. Thus, the following. * Acquire the will to change circumstances. * Acquire the vision (dream). * Develop a road-map embedded with short-term objectives leading to your overall goal and objective. * Just do it and do not let go until it becomes a reality.
Explain the difference between Hardware and Software?
A stack is a concept in computer science that works like this:
You push value A into the stack, and it takes position 1. Then you pop the stack, and get A. If you were to push A, then B, A would be pushed into position 2, and B would be in position 1. When you pop, however, you can only get the value in position 1 (B) and A would pop to position 1. This is useful for data storage, but, expanding, you can do simplified arithmetic if you store data in positions 1 and 2, and define that the ADD command sums positions 1 and 2, erases 2, and stores the sum in 1. And so on.
A software stack is a stack that is implemented in the software of a computer: A large series of commands is given to the processor that make it store data in a "stack" somewhere in memory, and are usually sequential.
Pros: Simple to implement.
Cons: Slow and resource consuming.
A hardware stack is a series of memory units, often built into the processor, that quite literally are a stack. The only way to store data in them is to push, and the only way to access it is to pop from the first position (top of the stack).
Pros: Very fast, and is useful to the processor, even when you aren't actively using it.
Cons: Has to be engineered, and is often expensive to make.
3 Which unit of measurement is used the most in science and engineering around the world?
The metric system is most widely used, used in every country with the exception of America and Belize.
