Answer:
metals, composite, ceramics and polymers.
Explanation:
The four categories of engineering materials used in manufacturing are metals, composite, ceramics and polymers.
i) Metals: Metals are solids made up of atoms held by matrix of electrons. They are good conductors of heat and electricity, ductile and strong.
ii) Composite: This is a combination of two or more materials. They have high strength to weight ratio, stiff, low conductivity. E.g are wood, concrete.
iii) Ceramics: They are inorganic, non-metallic crystalline compounds with high hardness and strength as well as poor conductors of electricity and heat.
iv) Polymers: They have low weight and are poor conductors of electricity and heat
Technician A is wrong.
- Usually, hoods have what is called "Crush Zones" underneath the panels. The function of the Crush Zone is to prevent the hoods, during a collision, from entering into the passenger space.
- The crush zones allow the hoods to fold instead.
Technician B is right.
- Automobile producers now make use of a hybrid form of hood that consists of fiberglass reinforced with plastic.
- They are mostly used for trucks that have a low volume of production.
- The hood is built using a process called Resin Transfer Model (RTM).
See the link below for more about automobile engineering:
brainly.com/question/4822721
Answer:
Spindle
Explanation:
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Staying hydrated at all times
A model of living systems as whole entities which maintain themselves through continuous input and output from the environment, developed by ludwig von bertalanffy is known as Systems theory.
<h3>
what are the application of systems theory?</h3>
It is a theoretical framework to understand the working mechanism of an organization.
It is an entity where all the elements necessary to carry out its functions.
A computer is the best example of showing the mechanism of system theory.
computer is a system which has many smaller sub-systems that have to work in coordinated manner.
These sub-systems are the processor, RAM, motherboard, hard drive and power supply.
Learn more about systems theory , here:
brainly.com/question/28278157
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