Science, asked by josethomasolickal12, 1 month ago

HELP ME GUYZ PEASE HELP ME

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Answered by ItzMrHeartHacker

6

Answer:

A light-emitting diode is a semiconductor light source that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy in the form of photons.

Answered by ELSAALACSA

1

Answer:

(2) Plastics in health care industry are used in packaging of medicines;plastic threads are used for stitching wounds. Also syringes, gloves and many kind of medical instruments are made up of plastic.

● Plastics are used in the packaging of tablets, syringes, doctor’s gloves and a number of medical instruments.

● Threads used for stitching wounds are made of medical instruments.

● Plastics are used for making intravenous blood bags and heart valves as well.

Explanation:

(1)Thermosetting plastics are made up from long chains of molecules that are cross-linked. They have a very rigid structure.

example:Epoxy Resin.

Phenolic(Bakelite)

Vinyl Ester Resin.

Cyanate Ester.

Poly Ester.

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