Solve Physics Problems: Alternative Sources for Challenging Questions

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Alternative sources for challenging physics problems were discussed, with a specific request for recommendations similar to those found on solvephysics.com. One user suggested the website komal.hu, which offers past competition problems, although not all come with solutions. The importance of community support was emphasized, encouraging users to post unsolved problems in the forum for assistance. The discussion highlights the need for accessible resources and collaborative problem-solving in physics. Overall, users are encouraged to explore various platforms and seek help when needed.
inkpot
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Could anybody suggest a source of physics problems similar to those found at the following link:

http://www.solvephysics.com/index.html

The problems provided at this site are what I require but a difficulty that arose when trying to purchase their material is proving difficult to resolve, ie I do not get any response to my query on the difficulty, so I would like to find an alternative.


inkpot
 
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Tusike,
Thank you for your response.

Do you know where solutions to past questions can be obtained?

Best regards
 
I forgot to mention these: http://www.komal.hu/verseny/korabbi.e.shtml
They are the problems of previous years.
The solutions are not given to all problems, unfortunately, and this even bothers me:) Some of the solutions are posted, so you may be able to check the numerical and final answer. Otherwise I suggest that if you just can't do a problem, you ask it from me or post it on the forum, that's what I've done.
 
Tusike,
Thank you for your further response.

I will do what you suggest with any problems that I cannot solve.

Best regards
 
The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

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