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How do you make a the subject of r equals ab divided by a plus b?
Are you asking to have that equation solved for 'a' ?r = ab / (a + b)Multiply each side by (a + b) . . . ra + rb = abSubtract 'ra' from each side. . . . rb = ab - raFactor the right side . . . . . . . . . rb = a (b - r)Divide each side by (b - r) . . . . . a = rb / (b - r)
Two metallic wires A and B are connected in parallel combinationWire A has length 'l' and radius 'r'Wire B has length '2l' and radius '2r'Commute the ratio of total resistance of parallel combination?
FOR WIRE A , RA = rho L/A = rho L/pie* r square -equation 1 RB = rho 2L/pie(2r)square = rho 2L/4 pie*r square =rho L/2 pie * r square -equation 2 RA/RB = rho L/pie * r square * 2 pie *r square/rho L RA/RB = 2 RA = 2RB , RB = RA/2 1/Rp = 1/RA + 1/RB =1/RA +1/RB 1/Rp = 3/RA Rp/RA = 1/3 Hence the ratio is 1:3
What is RB plus H2o?
2Rb(s) + 2H2O(l) --> 2RbOH(aq) + H2(g)
What shipping company using RB after 9 digits then CN?
It might be China Post Registered Mail.
How many square feet is a 27 inch diameter minus a 24 inch diameter interior circle?
Area of circle-A = (pi) (Ra)2Area of circle-B = (pi) (Rb)2The difference in their areas is (pi) [(Ra)2 - (Rb)2] = (pi) (Ra + Rb) (Ra - Rb) =(pi) (25.5) (1.5) = 38.35 pi = 120.166 square inches (rounded)The questions asks for the area of the annulus in square feet: 0.8345 square footCheck: (the old-fashioned way)Area-A = (pi) (13.5)2 = 572.555Area-B = (pi) (12)2 = 452.389(572.555) - (452.389) = 120.166 yay!120.166/144 = 0.8345 (rounded)
How many protons does the element RB have?
Each atom of Rubidium (Rb) has 37 protons.
What is Rb's number of protons?
There is actually 37 Protons in Rb (Rubidium). Also there is the same number of protons as electrons. So 37 for protons and electrons. (: Your welcome little kid.
An atom contains 37 protons what element is it?
the atomic number of any element is the number of protons in its nucleus, so in this case, 31, Gallium
What element is in group 1 with 37 protons?
If you look at a periodic table and go to group one, and than the element with an atomic number of 37 it is Rb. The atomic number is the number of protons and electrons. Rb is Rubidium.
How many electrons do Rb have?
Rubidium (Rb) has a +1 ion, will have the same electron configuration as krypton (Kr) because the +1 status means it has lost an electron. The configuration is written 1s22s22p63s23p64s23d104p6.
What elements symbol is Rb?
The Element with the Chemical Symbol of Rb is Rubidium. Rubidium is a soft, silver-white metallic elements of the alkali metal group. (A#-37 and AM-85.4678)
What is the atomic number of rubidium?
The atomic number of rubidium (Rb) is 37.The atomic weight of Rb is 85.4678(3) grams per mole.See the Web Links to the left of this answer for a periodic table with more information about this element!
What is the chemical symbol for Rubidium?
Rubidium: Rb, atom number 37, mass 85.47 a.m.u
What is the correct noble gas configuration for Rb?
[Kr]5s1 would be the noble gas electron configuration for Rb.
What is the chemical symbol of rubidium?
The chemical symbol of rubidium is Rb Rb-- atomic # 37, atomic weight 85.87
Which element completes the 3d sublevel?
This alkali metal is Rubidium Rb, having atomic no 37
What is Rb ions charge?
Rubidium is a metal element. There are 37 electrons in a single atom.
