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RAs are boys who want to spend time after Wensday afternoons to help the comunity and spread christ around the world. If your child is intrested most churches do it.. RAs are boys who want to spend time after Wensday afternoons to help the comunity and spread christ around the world. If your child is intrested most churches do it..
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What does an ra factor of 74 mean?
r3hk7
What are the standard units for an average roughness value Ra reported as 50?
average roughness, or Ra, are expressed as microinches or micrometers (aka microns). given that your value is '50', i'd assume that the units are microinches if you're talking about a polished surfaces. your best bet is to contact the source that gave you this value and confirm the units. Ra is not a unit of measurement; it is a quality that is measured. unfortunately, you will experience this dilema again and again.
What is the symbol for an atom of radium with 88 protons and 140 neutrons?
First of all there is NO reason for the plural form of this question, because every element has only ONE unique atomic number with ONE unique symbol. In this case 86RaRadium is a radioactive chemical element which has thesymbol Ra andatomic number 88 (group II, period 7 in the PS).Its appearance is almost pure white, but it readily oxidizes on exposure to air, turning black. Radium is an alkaline earth metal (like Ca and Ba).Ra is found in trace amounts in uranium ores. It is extremely radioactive. Its most stable isotope, 226Ra, has a half-life of 1602 years and decays into radon (86Rn) gas.
What do you want to learn from science?
I want to learn how the universe works.
Why is surrogacy used?
to help women who want to have babiesto help women who want to have babies
