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How does conduction and convection are affected by paving over a grass field?
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∙ 12y ago
It is harmful and effects the air pollution
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∙ 12y ago
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Transfer of heat by hot liquids and gases?
Convection is the transfer with in the fluid. If a container of hot liquid is touching something then it is conduction. If the heat is travelling through the air then it is radiation.
How field of education is affected by the capabilities of computer?
Computers are becoming more and more important within education both as a learning tool and as a teaching tool. It is also very much useful for keeping records of all individuals at the school.
What produce by the flow of electric charge from one area to another?
When electric charge flows from one place to another, it induces a magnetic field. The direction of the magnetic field is found by the right hand rule. To use the right hand rule, put your right hand into a fist with your thumb pointed up. When your point your thumb in the direction of the current, and the direction your fingers gives you the direction of the magnetic field.
A hollow metal sphere has a large negative charge on it The electric field strength inside the sphere is?
Are you kidding me? Its zero. That's the easiest E/m question ever. because: A: Every textbook talks ad nauseum about how the field inside any solid conductor or hollow conduction is zero B. The problem doesn't give you any numbers about how large the negative charge is. If you weren't an idiot you should see that you can't actually come up with any sort of numerical answer unless its infinity or zero. Since an infinite electric field on the inside is not physical, it must be zero. Read your book sometime- It would help. What is the mathematical solution to the problem?
How does advection differ from convection?
Atmospheric and oceanographic sciences generally differentiate between vertical convection and horizontal advection. These disciplines study the atmosphere and the oceans which are both much wider in the horizontal than they are thick in the vertical. Making the distinction between horizontal (i.e. isopycnal, along surfaces of constant density) and vertical (i.e. diapycnal, through density surfaces) therefore makes sense for meteorologists and oceanographers. In fluid mechanics on the other hand the terminology is often used interchangeably. Their study environment is frequently a tank in a laboratory and therefore is more of a cube compared to the thin oceanic layer on the Earth. In fluid mechanics, advection and convection is the same.
Transfer of heat by hot liquids and gases?
Convection is the transfer with in the fluid. If a container of hot liquid is touching something then it is conduction. If the heat is travelling through the air then it is radiation.
Where does the convection that causes earths magnetic field?
The convection that causes Earth's magnetic field happens in Earth's molten outer core.
Difference between conduction current and displacement current?
Conduction refers to electrons or, "holes" in the case of semiconductors, which are conducted, under the influence of an electric field, from one place to another. However, in semiconductor there is a phenomenon called "drift current" which is more a function of very small field and random motion from one place, within the material, to another place. But neither of these is ever referred to as a "convection" current. The term "convection" is used in connection with air currents moved by differences in temperature between one place and another. Hot air tends to rise while cold air tends to fall. Consequently, a circulation of air, due to temperature is called a convection current.
What has the author Latif M Jiji written?
Latif M. Jiji is a scholar known for his research in the field of heat transfer and fluid dynamics. He has written numerous scientific papers and books on these subjects, focusing on topics such as convection heat transfer and porous media flows.
What ionizing radiation is not affected by an electric field?
No electromagnetic radiation, whether ionizing or not, is affected by an electric field or by a magnetic field.
Are convection currents responsible for the magnetic field?
Yes, of course...
The convention that causes earths magnetic field happens in earths?
core
What is a arc?
discharge: electrical conduction through a gas in an applied electric field
Where does the convection occur that causes the Earth's magnetic field?
This happens in the earth's core.
What are FETs?
Field Effect Transistor A: basically a silicon bar where the conduction is controlled by a field since there is no connection to the gate the impedance is very high
Where does convection occur?
Convection occurs when and where a fluid is in a gravity field and heat is applied to its base.
How does convection differ from convection?
Well it differs in this way. Conduction is when heat is applied to an object and causes mainly the point of contact to be heated. For example lighting a match under a metal rod. It will mainly heat the point of contact, eventually heating the rest of the rod. Additionally, conduction can be referred to when talking about electricity and whether a material can conduct or not. Convection is different as it disperses heat evenly through a liquid. For example, boiling water. A single point of the water is heated, then it rises, allowing colder water from the top to fall, heat, rise and creates a current, evenly heating the water. The same example can be used when referring to preheating an oven. Hopefully this helps. Convection involves the actual movement of fluid materiel, either liquid or gas, usually in a gravitational field where the difference in temperature causes difference in density which in turn causes fluid motion. Conduction can and does occur concurrently with convection, but does not involve the macroscopic movement of materiel. Conduction can occur in gasses or liquids, but also in solids. Conduction occurs when the thermal vibrations of hotter mater are transferred to cooler matter. There is a third method of heat transfer, Radiation. Radiation can occur in all three phases of matter, but can also transfer heat across a vacuum. Usually thermal radiation is in electromagnetic wavelengths too long to be visible, but in some situations like an incandescent bulb or the sun, it can be seen.
