Answer:
What is the problem?
Who has the problem?
Where does the problem occur?
When does the problem occur?
How often does the problem occur?
What causes the problem?
What does the problem impact?
Explanation:
Answer:
Molecular formulas describe the exact number and type of atoms in a single molecule of a compound. The constituent elements are represented by their chemical symbols, and the number of atoms of each element present in each molecule is shown as a subscript following that element's symbol.
Answer:
5.31x10⁻⁶ C
Explanation:
The cube is located 100 m altitude from the ground, so the superior face is at 100m and has E = 70 N/C, and the inferior face is at the ground with E = 130 N/C.
The electric field is perpendicular to the bottom and the top of the cube, so the total flux is the flux at the superior face plus the flux at the inferior face:
Фtotal = Ф100m + Фground
Where Ф = E*A*cos(α). α is the angle between the area vector and the field (180° at the topo and 0° at the bottom):
Фtotal = E100*A*cos(180°) + Eground*A*cos(0°)
Фtotal = 70A*(-1) + 130*A*1
Фtotal = 60A
By Gauss' Law, the flux is:
Фtotal = q/ε, where q is the charge, and ε is the permittivity constant in vacuum = 8.854x10⁻¹² C²/N.m²
A = 100mx100m = 10000 m²
q = 60*10000*8.854x10⁻¹²
q = 5.31x10⁻⁶ C
Answer: Y 21.38 % , Al 32.44 % and O 46.16 %
Explanation: Molar mass of YAl5O12 is 88.91 + 5·26.98+12·16
= 415.81 g/mol
m-% ( Y) = 88.91 / 415.81 = 21.38 % , m-% (Al) = 5·26.98 / 415.81 =
32.44 % , rest is Oxygen
