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Does laser engraving entail the usage of heat?
It may heat up the surface and subsequently vaporize the material, or perhaps the material may fracture and flake off the surface. This is how material is removed from the surface to create an engraving.
Why are bridges declared unsafe after long use?
Due to repeated stress and strain, the material used in the bridges loses elastic strength and ultimately may be collapsed. Hence, bridges are declared unsafe after long use
What the transfer of energy as heat through a material?
That would normally be conduction unless the material is fluid - in which case you would have a combination of conduction and convection. In some cases a material may be sufficiently transparent to permit some heat transfer via radiation.
Why should you not use heat on a container that may of had an inflammable material in it?
because it might melt (the container)
Give a reason why the kettle loses less heat than the saucepan by the process of conduction?
The kettle loses less heat than the saucepan because it has a smaller surface area in contact with the surroundings, resulting in less heat transfer through conduction. Additionally, the kettle may have thicker walls which reduce heat loss through conduction compared to the thinner walls of the saucepan.
What changes may happen when heat transfers into or out of matter?
When heat transfers into matter, it can lead to an increase in temperature, causing molecules to move faster and leading to thermal expansion. When heat transfers out of matter, the temperature decreases, causing molecules to slow down and potentially leading to contraction of the material. Heat transfer can also cause changes in the state of matter, such as melting or freezing.
What could happen if there's low coolant level?
At first you find little or no heat from the heater then later on the engine may over heat.
If you add amounts of heat to a liquid what could happen?
The liquid may boil and become a gas.
Why does the comet not have a tail?
A comet may, or may not, have a tail. It will have a tail if it gets sufficiently close to the Sun; in this case, it will start to heat up, part of its material will evaporate, and the solar wind will push this gas out into space.A comet may, or may not, have a tail. It will have a tail if it gets sufficiently close to the Sun; in this case, it will start to heat up, part of its material will evaporate, and the solar wind will push this gas out into space.A comet may, or may not, have a tail. It will have a tail if it gets sufficiently close to the Sun; in this case, it will start to heat up, part of its material will evaporate, and the solar wind will push this gas out into space.A comet may, or may not, have a tail. It will have a tail if it gets sufficiently close to the Sun; in this case, it will start to heat up, part of its material will evaporate, and the solar wind will push this gas out into space.
When is it useful not useful to heat materials?
It is useful to heat materials when attempting to change their physical properties, such as melting or shaping. However, it may not be useful to heat materials that are sensitive to heat and may degrade or become damaged, or when temperature control is crucial for the material's stability.
Is a heat conductor a material with a high melting point?
Not necessarily. A heat conductor is a material that allows heat to flow through it easily. While some heat conductors may have high melting points, it is not a defining characteristic of all heat conductors. High thermal conductivity is the key property of a heat conductor.
What occurs when a molecule with oxygen and produces heat?
The oxidation reaction is called combustion : the material may burn or explode.
