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Lubricants are used to reduce friction, as well as grinding the surfaces in contact until they are very smooth.
True
Friction is the act of one surface rubbing against another. To reduce friction, use something that offers a small amount of friction. Smoother substances reduce friction. A way to reduce friction is to use something which offers a small amount of friction. For example, you could use something like plastic or glass. Water, most liquids and different types of oil reduce friction. Powder, oil and grease are used in between surfaces to also reduce friction.
No, sand does not reduce friction but increase friction.
Lubrication to reduce friction. To increase friction step on the brakes.
Oil is used to reduce friction.
Oil is mainly used to reduce friction between contacting surface, e.g., metal on metal - not to reduce air friction.
Lubricants.
Lubricants are used to reduce friction, as well as grinding the surfaces in contact until they are very smooth.
Friction isn't always bad, but when engineers try to avoid or reduce friction, it is because of the energy lost due to friction.
yes.
True
To reduce unwanted friction.
To reduce the coefficient of friction.
Lubricants.
To reduce air friction.
Friction is the act of one surface rubbing against another. To reduce friction, use something that offers a small amount of friction. Smoother substances reduce friction. A way to reduce friction is to use something which offers a small amount of friction. For example, you could use something like plastic or glass. Water, most liquids and different types of oil reduce friction. Powder, oil and grease are used in between surfaces to also reduce friction.