Don't understand by the phrases 'third second'

  • Thread starter Thread starter Sanosuke Sagara
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The term "third second" refers to the time interval between t = 2 and t = 3, indicating the third second of an event. This terminology can be confusing as it is not commonly used in English. Clarification on the context of the question would aid in providing a more precise answer. Understanding the specific time frame is crucial for calculating the distance an object travels during that interval. Additional details about the object's motion would enhance the discussion.
Sanosuke Sagara
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My question is in the attachment.Thanks for anyone that gives help !
 

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They want to know how far the object goes between time t = 2 and time t = 3. (0-1 is the 1st second, 1-2 is the second second, and 2-3 is the third second).
 


The phrase "third second" is not commonly used in English and may be confusing. It is possible that it is referring to a specific time interval, such as the third second of a minute or the third second of a specific event. It would be helpful to have more context or information about the question in order to provide a more specific answer.
 
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Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
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