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Why is spinneret used to make nylon but is not needed to make cotton or wool fibres?
Spinneret was the name first given to the organ of spiders, caterpillars, etc that spin a cocoon or web. These natural organs are mostly complex structures which combine several chemical precursors which solidify into the thread protein upon their combining, or on exposure to air. The spinneret for nylon is a simple hole in a metal plate through which the molten nylon filament will fall, and harden as it cools. Woolen fibres are one form of hair, a feature common to all mammals. In the case of cotton, the ripe seed is enclosed in a fluffy bundle of fibres, which when treated, are the cotton of commerce.
What material is used to make a spotlight?
Spotlights are often made with aluminum. Homemade spotlights can be made out of everyday objects like coffee cans, already existing lamps, and paper towel holders.
How fast can you dry a towel under the sun?
This depends on the type of towel and the weather conditions, of course. However one reference from Beau Geis (French Foreign legion in the Sahara) mentions that a handkerchief one soldier used to mop his sweaty face was left on a basalt outcropping under the noon-day sun, was dry and hard in only three minutes.
What type of reasoning used the general knowledge of science to make predictions about specific?
Deductive
What type of energy transformation is it when the electric toaster is plugged into the outlet and is used to to make dinner?
Electrical energy is converted into heat energy in this case.
What type of towel should be used to dry a thermometer?
Paper or cloth towel
What fiber is used for making ropes?
Sisal, fibres of the plant Agave sisalana are used to make ropes.
Give two reason for the elasticity in cartilage?
1. The number of chondrocytes present. 2. Type of fibres used.
What type of trees are frequently used for paper?
Softwoods are most used for paper as the fibres suit the purpose. These include pine spruce etc.
What main fiber is used in Egyptian clothing?
Linen made from the stems of the flax plant
Why is air current used to separate cotton fibres from their seeds but not used to separate jutefibres?
We get cotton fibres from cotton balls that is cotton flowers. But we get jute fibres from the stem of the jute plant not from the jute flowers.
What material is used to make a cake tight in a roll?
Parchment paper
What are the fibres of the cotton boll used for?
It is used for nothing. They get rid of it
Which types of electromagnetic waves can be used to send signals along optical fibers?
Only light is used to send signals along optical fibres. That's why this type of fibre is described as "optical". Fibres designed to conduct electrical signals are referred to as "wires".
Why fibrizer used in sugar plants?
Fibrizer is used for shredding of sugarcane into fibres to enable the fibres to be crushed in between the rolers of the mills to extract juice.
Why are synthetic fibers used in place of cotton?
Synthetic fibres are used in place of cotton mainly for more of a variety in material such as clothing. These fibres include lint.
What is in a potato that makes it a good conductor of electricity?
Potato contains a lot of fibres which help in a great conductivity that's why it is used to make battery.
