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What else can I help you with?
How do you get water in the boiler?
In the combo boiler for the central heating? You need a small piece of hose (or it might have a permanent connection) to fix to the mains from the boiler. Then turn the taps near the boiler for the mains and the boiler. You want the pressure to be about 1.3 bar
What does welding do?
Welding is the process of joining two similar or dissimilar metals by heating and melting it by adding some additives on that to make the joint perfect...
Auxiliary steam stop valve?
It is a stop valve placed on an auxiliary piece of equipment. Or it could be placed at the steam main to feed an auxiliary steam system (heating, auxiliary pumping. etc.). It is not the Main steam stop for the boiler or the prime mover (engine, turbine, process), it is for a secondary service.
What is string printing?
where you take the a piece of sting dip it in the paint and put in a white piece of paper
What does 'sister' mean in building?
When you put a new piece of wood against an old piece because you want the strength but cannot take the old piece out. Typically done with joists, rafters, or studs.
Are physical changes reversable?
Physical changes can be reversible or irreversible depending on the nature of the change. For example, melting ice is reversible as it can be frozen again, while cutting a piece of paper into smaller pieces is irreversible.
What are 5 examples of irreversible and reversible?
Irreversible examples: Burning a piece of paper, baking a cake, digesting food, rusting of iron, breaking a glass. Reversible examples: Melting ice into water, boiling water into steam, freezing water into ice, dissolving sugar in water, compressing a gas into a liquid.
Are physical and chemical changes simply reversible and non reversible changes?
Chemical changes create new substances and cannot be reversed.Burning paperLighting a matchMixing sugar and waterPhysical changes do not create new substances and can be reversed.Crushing a canTearing paperChopping wood
Are all physical changes are reversible changes?
Not all physical changes are reversible. Some physical changes, such as breaking a glass or cutting a piece of paper, are irreversible because they result in a permanent change to the material's structure. Reversible changes, like melting ice or boiling water, are changes that can be easily reversed by altering the conditions.
What kind of things are irreversible?
Irreversible means unable to be undone or reversed. If something has done "irreversible damage", it means that the damage will not heal.
When a piece of metal heats up and glows it gives off light waves and what?
When a piece of metal heats up and glows, it emits light waves due to the increased kinetic energy of its atoms. This phenomenon is known as incandescence. The color of the light emitted depends on the temperature of the metal.
What are you hearing when you shake a light bulb?
The piece of coiled wire made of Tungsten (Wolfram) that heats up and glows in the lamp.
What is light produced by heating a piece of metal until it glows?
If you heat a metal it will begin to glow faintly red at around 500ºC, or about 950ºF. If you continue to heat it, by 800ºC (about 1450ºF) the glow will a dull cherry red and at about 1100ºC (about 2000ºF) the colour will be a lemon or light yellow colour. Finally, at temperatures above about 1300ºC (about 2400ºF) the glow appears white, and very bright. Precautions must be taken, as looking directly at an object at this temperature can damage your vision.
What is an optional reversible modesty piece for a bridal gown?
A modesty piece was designed to be tucked into the breast of a woman's dress to discreetly cover her bosom in the 19th Century
Explain what is an irreversible change and give an example?
An irreversible change is a process that cannot be undone or reversed. Once the change occurs, it is permanent and cannot be restored to its original state. An example of an irreversible change is burning a piece of paper: once the paper is burnt, it cannot be turned back into its original form.
When a piece of wood decays is it a chemical change?
Decaying of wood is a chemical change since it leads to the formation of a different substance. The process is irreversible.
What is an irreversible change?
An irreversible change is a process that cannot be reversed to return to its original state. This could be due to a permanent alteration in the physical or chemical properties of a substance, making it impossible to revert back to its initial form. Examples include burning a piece of paper or cooking an egg.
