Physics, 13.08.2020 20:01 ysabel0420
1. Explain polymer and polymerisation with suitable examples.
2. What is nylon? Discuss its properties and uses.
3. What is orlon? Discuss its important properties and uses.
4. What is terylene? Discuss its preparation, properties and uses.
5. Discuss in detail the advantages and disadvantages of synthetic fibres.
6. What is thermoplastic and thermosetting plastic? Discuss the difference between them.
7.Discuss the uses of polythene, polystyrene, nylon and orlon.
8. What is the difference between teflon and bakelite? Discuss their important uses.
9. Discuss the uses of melamine and araldite.
10. Discuss various types of fibres along with their examples.
Answers: 2
Physics, 21.06.2019 22:30
Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.
Answers: 1
Physics, 22.06.2019 07:30
Write the function getkthdigit(n, k) that takes a possibly-negative int n and a non-negative int k, and returns the kth digit of n, starting from 0, counting from the right
Answers: 3
Physics, 22.06.2019 11:00
Marcella is a four-year-old girl who is a victim of emotional child abuse. based on the child and family services improvement and innovation act of 2011, which action should the government take for marcella? a. the state should arrest marcella’s abuser. b. the state should find a home for marcella as soon as possible. c. the state should enforce stricter laws in the area where marcella resides. d. the state should provide medical assistance to marcella.
Answers: 3
Physics, 22.06.2019 16:30
Place several e-field sensors at a few points on different equipotential lines, and look at the relationship between the electric field and the equipotential lines. which statement is true? 1-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of higher voltages. 2-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of lower voltages. 3-at any point, the electric field is parallel to the equipotential line at that point.
Answers: 1
1. Explain polymer and polymerisation with suitable examples.
2. What is nylon? Discuss its propert...
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