to allow easy removal of forms
A protective coating on the carbon pipe.to weld it you must grind it until you see sparks coming off.thats when you know you have gotten the coating off,then you can weld it easier.but it is cheap material pipe.low pressure.
Like any mechanical tool, machine or similar engineering equipment, an arc welder will have lots of different materials inside it. An arc welder is an electrical machine and any electrical machine must have wiring inside it. Most electrical wiring will be made of Copper. So yes, there is likely to be some Copper inside an arc welder.
No. If it's hard in the bag it must have gotten moisture in it which caused it to cure. It will make a handy doorstop though.
I see no reason why you can't do that. The question must be mis stated. Please clarify, and show your code.
Moisture in the air in a waveguide can scatter the microwave energy the waveguide is designed to transport. This translates into signal loss or attenuation. The VSWR drops, and that is not a good thing.
inside and out
No. For a volume you must have a cubic function.
why workstation must cleaned
Since there is no cube, the answer must be 0.
a cube is not a polygon because a polygon must be 2-d and a cube is 3-d
It must be cleaned daily.
All the faces on a cube - whatever its size - must be the same. Otherwise it is not a cube.
If the base of a cube is 100cm then the base must measure 10cm by 10cm. so, as it is a cube its height must also be 10cm. Therefore the volume of the cube is 10cm x10cm x10cm which equals 1000 cubic cm.
the non-mercury glass thermometer must be cleaned and soaked in a in a -- after each use
Equipment must be CLEANED at least every 24 hours.
The baby bottle
Heat must have to be applied to the ice cube.