Solve Physics, Chemistry & Math Problems - Grade 10

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A grade 10 student is seeking free online practice problems for physics, chemistry, and math during their vacation. They encountered issues posting in the appropriate forum category due to a misunderstanding of the forum's guidelines. The discussion emphasizes the importance of following directions in problem-solving, particularly in physics. Despite the initial confusion, the student expresses a desire to learn and improve. They request assistance in finding suitable practice problems to alleviate their boredom.
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HI guys,

I don't know where should I post this but well here it is!

Can anyone tell me where to find some practice problems on physics, chem and math online?
(I hope they are free and interesting!)
I am in grade ( class) 10 in school. And since these are my vacations I thought of doing some practice sums!

((PS: I tried posting this in Math and science learning materials category but it said there was something wrong and the Bulletin message displayed the error that I was trying to access the administrative controls! Well, I swear I didnt and was just posting a humble question! Could the moderators and admin please check out what went wrong??))


(please make sure the sums are challenging but not beyond my level! )
 
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What went wrong is that you didn't click on the link that said "Announcement: About this forum (PLEASE READ THIS!)" or the link that said "About the Learning Materials forums (PLEASE READ THIS!)"

The reason I bring this up is because one of the key concepts in solving physics problems is how to follow directions. This is fundamental - without having that solid, it will be difficult or impossible to make progress.
 
Vanadium 50 said:
What went wrong is that you didn't click on the link that said "Announcement: About this forum (PLEASE READ THIS!)" or the link that said "About the Learning Materials forums (PLEASE READ THIS!)"

The reason I bring this up is because one of the key concepts in solving physics problems is how to follow directions. This is fundamental - without having that solid, it will be difficult or impossible to make progress.

Sorry! (Really Sorry!)
I never really even saw the announcement and just clicked on the new topic button!
I know that everyone really need to stick to principles in physics but I seem to have overlooked this principle!
Thanks anyway!
I have learned a lot entering this forum besides physics and other subjects.

And also could anyone please help me with my main question??
 
Please reply guys, I'm getting bored!
 

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I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
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Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
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