Science

How much heat does it take to melt steel?

Steel often melts at around 1370 degrees C (2500 °F). This varies depending on the specific steel alloy.The specific heat of steel varied from 420J/KG/Deg C at room temperature to 720J/KG/Deg C at 1535 deg C. This equates to a theoretical heat requirement of approximately 375KWh/mt to melt steel from room temperature. In practice, foundries use between 500 and 800 KWh /mt to raise steel to a little above its melting point of 1535deg C.

How much does one gallon of steam produced from distilled pure water at zero degrees Celsius weigh?

Gallons, as a form of measurement, is typically only applied to liquids and not to gases. A gallon is, however, a measure of volume. And assuming that you were talking about 1 gallon of distilled pure water being heated from zero degree Celsius until it is completely converted to steam, the answer is 8.33 lbs - the same as it weighed as a liquid. The solid, liquid and gas form of this much water will weigh 8.33 lbs. This assumes that none of the mass gets converted to energy, which it shouldn't, and also that it is weighed here in the laboratory and not on the moon or at some other location.

How do you change the O2 sensor on a 2003 Mitsubishi Eclipse 2.4L?

i depends on if its sensor and bank 1 or sensor and bank 2, sensor and bank 1 is in front of the catalytic converter whereas sensor and bank 2 are behind the catalytic converter. just look for the sensor sticking out of the exaust, disconnect and resolder wiring all you really need is a crescent and a soldering iron. i just went through this with my 2001 Mitsubishi eclipse spyder.

If a book remains stationary on a table are the forces acting upon the book in equilibrium?

the book cannot change its direction of motion

How many different types of golf clubs are there?

Golf Clubs There is the Driver, Irons from 1-9, Woods from 3-5, irons that have a letter on them= S (Sand Iron), P or W (Pitching Wedge), L (Loft), and two irons that are called 58 and 60. (The 58 and 60 stands for the degrees on the club. So now that I labeled all of them that means there is 18 types of golf clubs!

What career possibilities are there for a Physics degree holder?

Direct uses of a physics degree include research, teaching andrelated fields such as seismology and metallurgy. Other fieldswhere it would be useful are investment analysis, scientificpublishing, patent work and environmental monitoring and control.

What kind of questions can science answer?

How, not why It is frequently said that science can provide answers to the "hows" for almost EVERYTHING, for example how the electric kettle works, but not the "why" questions....

Is there a way to defy the law of gravity?

Defying the Laws of GravitySome Things Are Best To Not Ask, This Is One Of Them. YOU DON`Tyou can by making Yorkshire puddings when they are ready to cook you tip up the bowl and it wont fall out ask your physics teacher..... every particle in the universe attracts every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them (wikipedia) According to the laws of gravity, every object in the universe is attracted to every other object in the universe. And has a form of gravity acting on them. I suppose the only way for gravity to be defied is to have the entire universe collapse on itself. Even airplanes and space shuttles have gravity acting on them.Although this seems like a stupid question, the truth is everyone has 'defied' gravity at some point, even if for a very short time, by jumping or hopping or the like. However, gravity soon gets the better of you.

What is silver used for?

Sterling silver is used for jewelry, silverware, etc. where appearance is paramount. This alloy contains 92.5% silver, the remainder being copper or some other metal. Silver is of the utmost importance in photography, about 30% of the U.S. industrial consumption going into this application. It is used for dental alloys. Silver is used in making solder and brazing alloys, electrical contacts, and high capacity silver-zinc and silver-cadmium batteries. Silver paints are used for making printed circuits. It is used in mirror production and may be deposited on glass or metals by chemical deposition, electrode position, or by evaporation. When freshly deposited, it is the best reflector of visible light known, but is rapidly tarnished and loses much of its reflectance. It is a poor reflector of ultraviolet. Silver fulminate, a powerful explosive, is sometimes formed during the silvering process. Silver iodide is used in seeding clouds to produce rain. Silver chloride has interesting optical properties as it can be made transparent; it also is a cement for glass. Silver nitrate, or lunar caustic, the most important silver compound, is used extensively in photography. Silver for centuries has been used traditionally for coinage by many countries of the world. In recent times, however, consumption of silver has greatly exceeded the output.

Why are the bubbles in bubble bath always white even when a different color bubble bath is used?

Bubbles are made of water and have air inside Water has a higher refractive index than air (it slows down light more), and because they are spherical, they act like a divergent lens, bending the light. As the light bounces through many bubble surfaces it is bent each time- it is scattered (reflected and refracted) in all directions (including back to your eyes). All the wavelengths (which equate to colours) act in the same way- (hardly any of the light is absorbed as the coloured water-the bubble- is so thin) Colours are seen when white light is shone through an object (in this case coloured bath water), where wavelengths of a particular length are absorbed and others are unaffected. Refraction occurs when light goes through an object (a rainbow is made when light refracts through water and shows how white light is made up of all different colours) Reflection occurs when light is bounced back off a surface As all wavelengths act the same, if you shine light on the bubbles, the same proportions of wavelengths gets back to your eyes. As you're using white light from a bulb or the sun (which is made up of all the colours with a wide range of wavelengths)- you'll see white bubbles. (of course if you used a red light for example- you would see red bubbles) If the coloured liquid was very thick or had a very intense colour, the bubbles would be lightly tinged as more of the corresponding wavelengths are absorbed- but still much lighter than the bulk fluid. (e.g. bubbles on the head of a Guinness are more creamy than white because of the dark brown liquid). I hope that this has answered your question :)