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Mechanical physics is a branch of physics that deals with the motion of material objects under the influence of forces.
Mechanical physics falls under two main branches:
- Classical mechanics
- Quantum mechanics
Classical mechanics deals with the laws of motion of physical objects and the forces that cause the motion, while quantum mechanics is the branch of physics which deals with the behaviour of smallest particles (i.e. electrons, neutrons, and protons).
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Meghna Thapar 5 years, 6 months ago
Cells are mostly same but are differ in shape and size and so they are performing different functions accordingly. For example, a muscle cell is differ from a nerve cell, in following ways :-
It is the structural and functional unit of nervous tissue. It is the structural unit of muscular tissue. It transmits impulses. In addition to transmission of impulses, it involves in contraction and relaxation of muscles. Here, the plasma membrane is called as neurilemma. Here, the plasma membrane is called as sarcolemma. The cytoplasm is called neuroplasm. The cytoplasm is called sarcoplasm.
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Examples of pressure in everyday life:
- A school bag has wide strap made of thick cloth so that the weight of the bag may fall over a large area of shoulder of the child producing less pressure on the shoulder due to which it is more comfortable to carry the heavy school bag.
- A sharp knife has a very thin edge of its blade. It cuts objects like vegetables better because due to its very thin edge, the force of our hand falls over a small area of the object producing a large pressure and thus cuts the objects easily.
- The tip of a sewing needle is sharp so that the needle may put the force on a very small area of cloth, producing large pressure sufficient to pierce the cloth being stitched.
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Arushi Chandurkar 7 years, 3 months ago
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