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What is the difference between astm a53 astm a120 in thickness of pipe?
The difference in thickness is not by the ASTM grade, but rather by the term "Schedule" - as in Schedule's 10, 40, and 80 - with schedule 10 having the lighest wall thickness, and schedule 80 having the thickest.
If a beam of light falls on a smooth wall will you observe regular reflection or diffuse reflection?
It will be diffuse reflection. No matter how smooth the wall looks it is rough on a microscopic scale and will scatter the light.
What are the 2 main differences between animal and plant cells?
plant cells have a cell wall surrounding the cell membrane for protection and rigidity, animal cells don't have a cell wall. plant cells have larger vacuoles than animal cells. animal cells have centrioles to aid in cell division, plant cells do not. plant cells have chloroplasts (used in photosynthesis) and chlorophyll (the green pigment), animal cells do not have either of those.
What is a good material for a backsplash?
AnswerFormica or any material that is non absorbentANSWER:What has worked best for me is clear Lexan or plexiglass. It protects the wall and it needs no painting and actually protects the painted or wallpapered surface above the sink. I use brass screws to hold it onto the wall. It also makes a good grease splash above the oven on the wall. It is easy to clean and if scratched or damaged, its easy to replace. It needs to be at least 1/8 inch thick.
How do cavity walls work?
Cavity walls are made up of an outer wall (ie brick) and studs or concrete blocks inner supporting wall. The cavity in between (usually a minimum of an inch) is a space for air circulation and also to keep rain from getting to the outside surface of the inner wall.
