0
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
How do you convert MBH to GPM?
To convert MBH (thousand British thermal units per hour) to GPM (gallons per minute) for a water system, you need to know the specific heat capacity of the fluid in the system. Once you have this information, you can use the formula: Flow rate (GPM) = (MBH x 1,000) / (8.01 x ΔT), where ΔT is the temperature change of the water in degrees Fahrenheit.
What is a Cellular Organization?
All organisms are made up of cell.basically their are two basic types of cell.i.e,prokaryotic cell and eukaryotic cell .prokaryotic cell have a proper nucleus but eukaryotic cell don't have a proper nucleus....
When a device uses two batteries why do they have to be placed positive to negative?
Batteries placed in series (which is what you're describing) add their voltages together.
Thus two 1.5 volt batteries give 3 volts in series ... IF they point in the same direction.
If they point in opposite directions, you get zero volts.
Tin is a chemical element. It is often obtained from a mineral called cassiterite (SnO2) and is extracted via cooking it in a furnace with carbon. It is often used as a protective coating on top of other metals (ex. tin cans [made from steel]) to protect them from rust.
Symbol: Sn (from the latin word Stannum)
Atomic number: 50
Mass number: 118.71
Group number: IVA/4A or 14
Period number: 5
Electron shell configuration: 1s22s22p63s23p63d104s24p64d105s25p2
A shear wave is a type of seismic wave that moves through the Earth's crust in a side-to-side motion, perpendicular to the direction it is traveling. These waves are slower than primary waves (P-waves) but faster than surface waves (R-waves) and are responsible for causing the most damage during an earthquake.
What is fermentation media for streptomycin production?
Steptomycin can be produced in small scale using the following media Beef Extract: 3gms Peptone: 5gms Glucose: 10gms NaCl: 5gms Tap Water: 1000ml pH :7.2 Temperature:28 C Incubation 5-10 days for further information contact through yncbiotech@gmail.com
There is no product called "centrifuse." It may be a misspelling or a new term. Can you provide more context or clarify?
What is the ug unit of measurement and how is it pronounced?
A microgram is equivalent to 10 to the power of -6 grams
What is sterilization and disinfection and what are the methods for sterilization?
Sterilization is the complete removal of all microorganisms ( e.g: becteria, virsues,...etc) from the surface area of 'anything'
While Disinfection is an in-complete removal of microorganisms from" inanimate or nonliving" objects. and has three distinctive levels. High level disinfection, intermediate level, and low level.
Both sterilization and disinfection have chemical and physical methods. And since the question is about the methods of sterilization then there are:
physical methods: Heating and radiation
chemical methods: some chemicals like 'Etheline Dioxide', or by chemical evaporation.
What is the relationship between volume and weight?
The relation between weight and volume -:
When the weight of a substance increases, its volume also increases.
Two substances may have the same weight but different volumes. (Example: If you have one stack of cotton and iron each of the same weight, they will have different volumes. Volume of cotton > Volume of iron in this case.)
Density = Weight/Volume.
What are the properties of petrol?
Petrol is a flammable liquid mixture primarily derived from crude oil. It is commonly used as a fuel for internal combustion engines due to its high energy content. Petrol is volatile, easily ignitable, and highly combustible.
What is the ideal airplane hangar size for two airplanes?
An ideal airplane hangar size for two airplanes would typically be around 60 feet by 60 feet. This size allows for enough space to comfortably park and maneuver two average-sized aircraft without them being too cramped. It also provides room for any necessary maintenance and storage equipment.
What definition of nano material?
Nanomaterials are materials that have at least one dimension in the nanoscale range, typically between 1 to 100 nanometers. These materials often exhibit unique physical, chemical, and biological properties compared to their bulk counterparts due to their small size and high surface area-to-volume ratio. They are widely used in various fields like electronics, medicine, and environmental science.
There are 0.25 meters in 25 cm. This is because 1 meter is equal to 100 cm, so to convert cm to meters, you divide by 100.
Scientist who uses reaction of carbonates and acids?
A scientist who studies the reaction between carbonates and acids would likely be a chemist specializing in inorganic chemistry. They would investigate how carbonates react with acids to form carbon dioxide gas, water, and a salt, studying factors like reaction kinetics, stoichiometry, and driving forces. This research may have applications in various fields such as environmental science, materials science, and geochemistry.
Section Modulus is moment of inertia divided by distance from center of gravity to farthest point on the cross-section or I/c. The units of Moment of Inertia is distance^4 so the units of section modulus is distance^3 ( distance cubed ). So if your units are in meters: I/c = (m^4)/(m) = m^3
What tool is used to measured length?
Some of the standard instruments used to measure length are a ruler, meter scale, measuring tape, vernier caliper, and screw gauge. To measure very long lengths like the length of a road we use measuring tape
Were is the deepest mine in the world?
South Africa is where it's at for deep mines. And what are they digging for? Gold! AngloGold Ashanti's Savuka mine near Carletonville is currently the world's deepest mine at just less than 3.8km below the surface. Gold Fields mines Driefontein will be the world's deepest mine at 4.1km below the surface and Kloof will be the second deepest mine at 4km underground when their extensions are complete. They're digging them now. At this stage AngloGold Mponeng mine is official the deepest mine in the world and the current project will take it another 300 meters deeper.
What is a clamp and what is it used for?
A clamp is a mechanical tool used to hold objects firmly together. It is typically used to secure materials while glue dries, during welding or woodworking, or to hold objects in place for cutting or drilling. Clamps come in a variety of types and sizes to suit different applications.
What type of charge do electrons carry?
Electrons carry a negative electrical charge. A neutron does not have a charge, it is neutral.
What is specific weight of diesel fuel?
The density of diesel fuel oil (20 to 60) at 15 degress Celsius is 820 to 950 kg/m3. In other words, it has from 82 to 95 percent the density of water, or specific gravity (relative to water) of 0.82 to 0.95.
Compare the properties of metals and nonmetals?
A metal is a chemical element that is a good conductor of both electricity and heat and forms cations and ionic bonds with non-metals. Cations are usually formed by electron loss. They are classified as alkali metals, alkali earth metals, transition metals (the classic metals), post-transition metals, lanthanides, and actinides.
A nonmetal is an element in groups 14 to 18 of the Periodic Table (group 17 are halogens and group 18 noble gases). Nonmetals are not able to conduct electricity or heat very well. As opposed to metals, non-metallic elements are very brittle, and cannot be rolled into wires or pounded into sheets. The nonmetals exist in two of the three states of matter at room temperature: gases (such as oxygen) and solids (such as carbon). The nonmetals have no metallic luster, and do not reflect light. They have oxidation numbers of ±4, -3, and -2.
Basic differences
- Metallic compounds conduct electricity and heat while non-metallic compounds are less conductive.
- Most metallic compounds are solid at room temperature (except Mercury and gallium which are liquids). Nonmetals may be solid or gas.
- Metallic compounds are hard and malleable
- Metals generally have higher melting and boiling points.
- Metals are electropositive while nonmetals are electronegative.
- Metals have 1, 2 or 3 electrons in the outermost shell while nonmetals have 4 to 8 electrons in the outermost shell.
- On electrolysis of metal compounds, metals are discharged at the cathode. On electrolysis of compounds, non-metals are discharged at the anode.
Transition Metals (classic metals)
There are 38 elements in groups 3 through 12 of the periodic table called "transition metals". As with all metals, the transition elements are both ductile and malleable, and conduct electricity and heat. The interesting thing about transition metals is that their valence electrons, or the electrons they use to combine with other elements, are present in more than one shell. This is the reason why they often exhibit several common oxidation states. There are three noteworthy elements in the transition metals family. These elements are iron, cobalt, and nickel, and they are the only elements known to produce a magnetic field.
Why some are metals and some are nonmetals?
Metals fill the s, d, and f orbitals. Nonmetals only fill the p orbitals thus giving us more metals on the table of elements. The greater question is why is this so? complicated answer but I will give it a try. Electron attraction to the nucleus obeys the inverse square as is evident in Coulomb's law. As the electron move away from the nucleus by the addition of shells (energy levels) the "pull" it feels to the nucleus drops off as a square of the distance. This means the electron's drop in attraction is an exponential drop. Draw yourself an exponential graph, with the greatest attraction at the top, quickly dropping off toward zero. At the top of the graph (left of the table you drew) are the nonmetals who feel a strong attraction toward the nucleus and so behave as nonmetals. Notice in the graph this represents very few elements along the X-axis. The bulk of elements fall beneath this.................exponentially............s, d, and f blocks flow sorta exponentially away from the nucleus. Leaving the few elements in the p block to behave as nonmetals.
Stress, in geology, is pressure and can result in an earthquake should the stress in a rock layer suddenly slip when the rock fractures and there is a sudden movement between the two surfaces.
Materials that are poor conductors of heat include wood, plastic, rubber, and glass. These materials have low thermal conductivity, meaning they do not easily transfer heat. This property makes them suitable for applications where heat retention or insulation is required.
