Answer:
By how it impacts our goals and the environment probably. Sorry if i'm wrong :(
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!
Lol please give me points
Answer:
a) 25.54 lb
b) No change
Explanation:
m = Mass of astronaut = 150 lbm
Weight of astronaut on earth = Mass × acceleration due to gravity on earth
= 150×32.18
= 4827 lbf
Weight of astronaut on moon = Mass × acceleration due to gravity on moon
= 150×5.48
= 822 lbf
a) On earth the mass in the spring scale shows 150 lbm because it is calibrated according to the acceleration due to gravity on earth. So, the weight of the astronaut shown on moon will be
Weight of astronaut on moon/acceleration due to gravity on earth
= 25.54 lb
b) Beam scale shows weight by comparing masses so there will be no change displayed on the beam scale.