If a virtual image occurs at 20cm "behind" a concave mirror, would u put a screen 20cm before the mirror to obtain the clearest possible image? if not, where?
solve for r r^64-1 = 2.5x10^7 (r-1) any ideas?
with ln(p1/p2)=deltaHvap/R x (1/T2-1/T2)
Could you check my answers and if wrong, suggest the right one. 1. In gas chromatography, two measurements are made. Identify the qualitative and quantitaive measurements. dye color and retention time 2. Why are components such as polymers like starch and cellulose unsuited to...
Is there a vacuum under the jars or is it just been air sealed with air already under it?
what is the purpose of the double bell jars that surround the international prototype of the kilogram in Paris?