Answer:
1. Oil
2. Grease
3. Penetrating Lubricants
4. Dry Lubricants
Answer:
The correct option is A
Explanation:
Thermoplastics are polymers that can be recycled. They can be melted with heat and moulded into any shape which becomes hard when cooled. The heat applied to it in the process of recycling does not affect its chemical composition.
There are two main classes of thermoplastics; semi-crystalline and amorphous.
An amorphous thermoplastic has a disorderly arranged molecular structure which makes it difficult to have a definite melting temperature (Tm). However, a semi-crystalline thermoplastic has a well arranged molecular structure which makes it melt after a certain/definite amount of heat is absolved. Hence, the correct answer is A
The scenarios whereby licensure plays a role is:
- Jorge opens his own consulting business after he has gained enough experience working for other firms.
- Employers in Sarah's area require formal verification that she meets all the standards and possesses all the skills required of a professional architect.
<h3>What is the meaning of licensure?</h3>
Licensure is defined as a limited practice or the use of a professional title that requires a license. Thus, prior to the engagement in specific professional activities, such as driving a vehicle on public roads, a license issued under a practice act is required.
Therefore, from the given situations, the perfect option that requires a licensure is seen in Option A and Option D.
Hence, a license issued under this title act prevents licensees from using a certain occupational title, however anybody can execute the activity using a less limited title.
Learn more about Licensure here;
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Answer:
V₂=43.58 m/s
Explanation:
Given that
P₂=200 KPa
T₂=90°C
V₂=? m/s ( exit speed)
T₁=30°C
P₁=100 KPa
V₁=350 m/s
We know that
Heat capacity for air Cp=1.005 KJ/kg.k
We know that for air change in enthalpy only depends only on temperature
Now from first law for open system
V₂=43.58 m/s