3. Does a magnet only exert attractive force? Give examples of the materials that can be att
e Answer in short.
1. When is an object said to be at rest?
By Give the names of different types of non-contact forces.
a magnet.
4. How does friction depend on the surface of bodies in contact?
5. Which states of matter exert frictional force?
6. Arrange static friction, rolling friction and sliding friction in increasing order.
7. How does a lubricant reduce friction?
8. How can you increase friction?
9. Why do airplanes have a streamline shape?
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kala kandi mota kandi
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