Question

If we apply oil on Door Hinges, the Friction will​

Answer 1

Answer:

When we put the oil the rough interlocks between the surface and body are filled by the drops of oil and hence become smooth and then the friction decreases. So, here we can say that if we apply oil on door hinges, the friction will decrease .

hope it's helpful

Answer 2

Answer:

5700km

Explanation:

Iodine and carbon are non-metals which are lustrous. Note that carbon is lustrous only in certain forms like diamond , and graphite.