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4 years ago

2. What is an important aspect of the American free enterprise system that encourages people to

Engineering

2 answers:

rusak2 [61]4 years ago

7 0

Have a positive mindset and attitude

Georgia [21]4 years ago

6 0

Answer:

For most people, it is profit motive, the incentive that encourages people and organizations to improve their material well-being by seeking to gain from economic activities. Producers want the highest profit and consumers want competition to drive down cost.

Explanation:

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A metal having a cubic structure has a density of , an atomic weight of , and a lattice parameter of Å One atom is associated wi

Veronika [31]

Answer:

Explanation:

Answer: The crystal structure of the metal is BCC

Explanation:

we first calculate the volume of the unit cell.

Volume of unit cell= (a°)^3.

The lattice parameter here is a°.

Substitute (6.13 * 10^-8)cm for a°.

Volume of unit cell = (6.13 * 10^-8)^3 = 2.3034 * 10^-22 cm^3/cell.

To determine the crystal structure we use

Density (p) = {(Number of atoms per cell) (Atomic mass)} / {(volume of unit cell)(Avogrado constant)}.

Substitute 1.892g/cm^3 for p (6.02*10^23) atoms/mol for Avogrado constant 1.3921g/mol.

For atomic mass and (2.3034 * 10^-22) cm^3/cell for unit cell.

1.892g/cm^3 = {(Number of atoms per cell) (1.3291g/mol)} / {(2.3034 * 10^-22) (6.02 * 10^23 atoms/mol)}.

Changing the subject of formula we have :

Number of atoms per cell = {(2.3034 * 10^-22) * (6.02 * 10^23) * 1.892} / 132.91

Number of atoms per cell = 2.

Since the number of atoms per cell is 2, :. the crystal structure of metal is BCC.

Note: p = density

a° = a subscript o

4 0

3 years ago

A simple formula to estimate the upward velocity of a rocket (neglecting the aerodynamic drag) is:

Bingel [31]

Answer:

Test code:

>>u=10;

>>g=9.8;

>>q=100;

>>m0=100;

>>vstar=10;

>>tstar=fzero_rocket_example(u, g, q, m0, vstar)

Explanation:

See attached image

5 0

3 years ago

Tech A says you can find the typical angle of a V-block engine by dividing the number of cylinders by 720

jeka57 [31]

Answer:

Tech A is correct

Explanation:

Tech A is right as its V- angle is identified by splitting the No by 720 °. Of the piston at the edge of the piston.

Tech B is incorrect, as the V-Angle will be 720/10 = 72 for the V-10 motor, and he says 60 °.

6 0

3 years ago

The primary heat transfer mechanism that quickly warms my hand if I hold it directly above a campfire is: a)-Radiation b)-Induct

Tanzania [10]

Answer:

The correct answer is option 'c':Convection.

Explanation:

When we ignite a campfire the heat produced by combustion heats the air above the fire. As we know that if a gases gains heat it expands thus it's density decreases and hence it rises, if we hold our hands directly above the fire this rising hot air comes in contact with our hands thus warming them.

The situation is different if we are at some distance from the campfire laterally. Since the rising air cannot move laterally the only means the heat of the fire reaches our body is radiation.

But in the given situation the correct answer is convection.

6 0

3 years ago

Consider the incompressible flow of water through a divergent duct. The inlet velocity and area are 5 ft/s and 10 ft^2, respecti

kenny6666 [7]

Answer:

v₂ = 1.25 m/s

Explanation:

given,

inlet velocity, v₁ = 5 ft/s

inlet Area = A = 10 ft²

outlet velocity, v₂ = ?

outlet Area = 4 A

= 4 x 10 = 40 ft²

Using continuity equation

A₁ v₁ = A₂ v₂

10 v₁ = 40 v₂

$v_2 = \dfrac{v_1}{4}$

$v_2 = \dfrac{5}{4}$

v₂ = 1.25 m/s

Hence, the exit velocity of the water through the duct is equal to 1.25 m/s.

6 0

3 years ago