Answer:
The dimensional formula of Young's modulus is [ML^-1T^-2]
Three units deformations observed in these bands.
<h3>What forces do a rubber band encounter?</h3>
Elastic force is the force that permits some materials to regain their former shape after being stretched or crushed. Thus, a stretched rubber band is subject to an elastic force.
The rubber band experiment uses a straightforward rubber band to show entropic force and a refrigeration cycle. The rubber band experiment involves stretching and then releasing a rubber band while measuring its temperature.
Always acting in the opposite direction of motion is friction. This indicates that if friction is there, it cancels out some of the force driving the motion (if the object is being accelerated). This results in a decreased acceleration and a smaller net force.
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17. a
18. c
19. a
20. c
21. c
The present day humans first appeared in the fossil record's around 66 million years ago soon after the cretaceous paleogene extinction event that eliminated 3 - quarters of plant and animals species on earth including many dinosaurs.
Answer:
option (c)
Explanation:
As the liquid 1 rests on the top of liquid 2, it means the density of liquid 2 is more than the liquid 1.
Thus, option (c) is correct.