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Does carbon have a nearly zero temperature coefficient of resistance?
Yes, carbon has a negative temperature coefficient. -0.5*10^3/C
Why carbon is used in brushes instead of semiconductor material in motor?
There are a number of reasons, including: 1. Carbon is self-lubricating. 2. Carbon has a negative temperature coefficient of resistance, which means that its resistance falls as its temperature increases -which is opposite that of metals such as copper. 3. Carbon is softer than copper, so will not damage the commutator. 4. Carbon will acquire the shape of the commutator segments and, so, will ensure maximum contact with them.
What is the temperature range of low temperature carbon steel in which range of operating temperature it can be used?
Carbon Steel is used upto 427 oC or upto 1100 oF.
Is it possible to cold roll high carbon steel?
Yes you can bend high carbon steel.
Why temperature drop is high in low carbon steel than high carbon steel?
Because high carbon steel has low fluidity & low carbon steel has high fluidity.
What is the form of carbon?
Under STP (standard temperature and pressure), carbon is a crystalline solid.
What is the physical state of carbon?
At standard pressure and temperature it is a solid.
Is carbon dioxide a kind of gas?
At standard pressure and temperature it is.
Is gas the physical state of carbon?
The state of carbon at standard room temperature and pressure is solid.
Is carbon dioxide a gas'?
Yes, Carbon Dioxide (CO2) is a gas at standard temperature and pressure.
What gas has approximately the same density as carbon dioxide gas at standard temperature pressure?
Sulfur hexafluoride gas has an approximate density similar to that of carbon dioxide gas at standard temperature and pressure.
Which gas can be liquefied under pressure at ordinary temperature?
Carbon dioxide (CO2) can be liquefied under pressure at ordinary temperature.
Diamonds are made of this element?
Carbon atoms that are exposed to a high enough pressure and temperature will result in formation of diamond.
What phase of matter is carbon dioxide?
Carbon Dioxide can be a solid, liquid or gas. At standard temperature and pressure, it is a gas.
Is carbon dioxide a gas or a liquid?
It depends on the temperature and pressure of its surroundings. check out its phase diagram for more information. the phase diagram is available here... http://www21.wolframalpha.com/input/?i=carbon+dioxide
Carbon dioxide critical temperature?
The critical temperature of carbon dioxide is 304.2 K (31.0°C). At this temperature and above, carbon dioxide cannot exist as a liquid regardless of pressure, transitioning directly from gas to supercritical fluid. It's a key parameter for understanding the behavior of carbon dioxide under high-pressure conditions.
Is carbon dioxide hard?
Carbon dioxide is a colorless gas at room temperature and pressure. It is not hard in the traditional sense of the word.
