Answer:
Basically there are two principal differences between the convection and conduction heat transfer
Explanation:
The conduction heat transfer is referred to the transfer between two solids due a temperature difference, while for, the convective heat transfer is referred to the transfer between a fluid (liquid or gas) and a solid. Also, they used different coefficients for its calculation.
We can include on the explanation that conduction thermal transfer is due to temperature difference, while convection thermal transfer is due to density difference.
Answer:
a) Number of atoms per unit cell for Ga = 4 atoms per unit cell
Number of atoms per unit cell for As = 4 atoms per unit cell
b) Volume density of Germanium in its unit cell = 4.35 × 10²² /cm³
Explanation:
GaAs has a number density of 4.42 x 10²² atoms/cm³ from literature.
Since GaAs is known to contain almost equal amounts of Ga and As.
Number density of Ga = Number density of As = 2.21 × 10²² atoms/cm³
Number density = Number of atoms in a unit cell/volume of the unit cell
Number of atoms in the unit cell = ?
Volume of the unit cell = (lattice parameter)³ = (5.65 × 10⁻⁸)³ = 1.804 × 10⁻²² cm³
Number of atoms per unit cell for Ga and As = number density × volume of unit cell = 2.21 × 10²² × 1.804 × 10⁻²² = 4 atoms/unit cell
b) Volume density = Number of atoms per unit cell/volume of unit cell
Germanium has 8 atoms per unit cell (from literature),
Volume of unit cell = (lattice parameter)³ = (5.65 × 10⁻⁸)³ = 1.804 × 10⁻²² cm³
Volume density = 8/(1.804 × 10⁻²²) = 4.35 × 10²² /cm³
Hope this helps!
Answer:
The answer to this question is 1273885.3 ∅
Explanation:
<em>The first step is to determine the required hydraulic flow rate liquid if working pressure and if a cylinder with a piston diameter of 100 mm is available.</em>
<em>Given that,</em>
<em>The distance = 50mm</em>
<em>The time t =10 seconds</em>
<em>The force F = 10kN</em>
<em>The piston diameter is = 100mm</em>
<em>The pressure = F/A</em>
<em> 10 * 10^3/Δ/Δ </em>
<em> P = 1273885.3503 pa</em>
<em>Then</em>
<em>Power = work/time = Force * distance /time</em>
<em> = 10 * 1000 * 0.050/10</em>
<em>which is =50 watt</em>
<em>Power =∅ΔP</em>
<em>50 = 1273885.3 ∅</em>
Answer: it would take 3 to 5 seconds to regain focus
Explanation: