True.
An intrinsic semiconductor is a pure semiconductor. At room temperature it behaves as an insulator because it only has a few free and hollow electrons due to thermal energy.
In an intrinsic semiconductor there are also electron fluxes and gaps, although the total current resulting is zero. This is because the action of thermal energy produces free electrons and gaps in pairs, so there are as many free electrons as there are gaps with which the total current is zero.
Answer:
A geological engineer
Explanation:
The field of geological engineering is concerned with geology, civil engineering and area of mining , geography and forestry.
Geological engineers apply their knowledge of earth science to solve human problems. Such as creating an equipment using science that can aid in solving the challenge in separating coal from dirt components in an environmental friendly manner.
Geological engineers investigate this that are connected to the earth such as mines, roads, quarries , pipelines, petroleum products, forests and building projects. They also perform surveys on effects of landslides and earthquakes.
Answer:
The maximum length of a surface flaw that is possible without fracture is

Explanation:
The given values are,
σ=1.65 MPa
γs=0.60 J/m2
E= 2.0 GPa
The maximum possible length is calculated as:

The maximum length of a surface flaw that is possible without fracture is
