Engineering

Because it can be melted and melted again

Powerpoint replaced the need to prepare good speeches or college lectures.

Friction can cause kinetic energy to change into thermal energy

You can use copper pipe.

ugly

about 2,6000

An op amp is made from transistors, resistors and capacitors. It is enclosed in a "chip".

A basic instrumentation amp is made of 2 op-amps.

you can't have a single op-amp perform as good as a instrumentation amp, although it can perfrom the same task.

An i-amp has much better CMMR (common-mode rejection) and a higher input impedance.

The question is somewhat vague, but basically any valve that is operated with any form of electricity can be considered 'electro'. Esentually, it could be a simple on off type of valve whereby a coil designed to accept a certain voltage level and capable of handling a certain ammount of power (Voltage x Current) will form a magnetic field when the voltage is applied, and move an internal plug that either covers or uncovers an oriface, which will in turn open or close a valve. More involved 'electro' valves may have motors that will move a stem in a proportional way to open or close a port through a valve partially.

they are used by showing where it is

The horizontal and vertical amplifier in the cathode-ray oscilloscope are deflection plates. The horizontal amplifier causes the beam to be deflected horizontally at a rate that is uniform. The vertical amplifier causes the beam to deflect vertically.

They all have advantages and disadvantages. In general, the one with the least disadvantages is the one you are most familiar with using. In my opinion, the biggest disadvatage (shared among all packages) is the difficulty in translating between packages. Many of us do this daily, and it is a PITA. Solidworks, in particular, is bad in that you can't save to a lower version that could be read by somebody working even 1 version down from you. The second biggest disadvantage (shared among many packages) is the difficulty of sharing data to co-workers without CAD seats or CAD knowledge.

it is the ststus or qualification of an engineer.

Stainless Steel

With a train whistle!

Just kidding. Engineers use symbols and schematic diagrams universal to their specific discipline. That way, an electronics engineer who only speaks Swahili can read a schematic written by an electronics engineer who speaks only English.

Pressure guage is first to come to mind.

Farmer

It depends on work history, level of experience and ability to impress your boss with a great attitude. Entry level building Engineer (or maintenance mechanic) could be as low as $8-$9 per hr. But with experience in a wide variety of trades where you know how to save the company money by doing all the repair work yourself (eliminating a need to use outside contractors) and having a good attitude about it, you could make over $70,000 a yr if you're promoted to manager. No one will promote a complainer. Prove you're valuable and the money will come. I've heard of Directors of Engineering at very large hotels that make over $100,000. But for that you'll have to have some schooling, be very well spoken and have the ability to play management politics. Bottom line is you can only get out of it what you put into it.

This question is too wide to be answered. If you mean a nuclear reactor, say so in the question. If you mean a chemical reaction vessel, say so and indicate what kind of reaction. If you mean something else, tell us what. Please submit a new question.

It depends on the equation and the coefficient. Coefficients can be constant (Boltzmann constant, Avogadro's number) but they can also be variable (Reynolds number). The coefficient of gravity, g, is 9.81 m/s^2 in metric units on Earth.

It's a standard hydraulic flange. SAE = Society of Automotive Engineers.

The dissadvantage of the current NASA Shuttle program is that it is outdated. Some of the shuttles still use 8track tapes, so it is cheaper to retire them and bring in a new system instead of update them.

Absolutely! Technical Graphics Communication can be considered a language in the sense that you are able to communicate ideas to other individuals who understand the subtext.

For example an American Civil Engineer can hand a French Civil Engineer a print and both of them would understand the ideas implemented in the drawing even though there is a language barrier.

The same can be considered of mathematics and programming languages.

The amount of money can you save by turning off lights is directly determinant on how many lights you have running, at what power rating and for what amount of time. For instance if you have one light bulb with a 75 watt rating running for 100 hours that will be 75kW-hours (where kW is equal to W x 10^3 or W x 1000) kilo-watt hours are a typical measurement in household meter boxes. If your electricity is being supplied at $0.08/kw-h then it is simply 75 x 0.08 which is equal to $6.00. therefore you can see that, with numerous lights, turning them off can offer a substantial saving over a long period of time, not to mention an important environmental benefit.

This question refers to the communication between a network and networked devices. Feedback between a computer and the network occurs through 'pings,' when each acknowledge each other intermittently.

biomedical engineer