GCSE exams soon. with some revision.

AI Thread Summary
GCSE physics exam preparation requires targeted revision strategies. It's essential to identify the specific exam board and access its syllabus, as this will guide your study focus. Utilizing past papers and mark schemes can provide insight into the types of questions that may appear on the exam. Asking specific questions about challenging concepts can facilitate better understanding and support from others. Engaging with the community for clarification on difficult topics is encouraged for effective revision.
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Hi this is my first one so i need help. I have GCSE physics exams soon and i need some help with revision. Just tell me anything that you can that you will think will help me. Thanks
 
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Thats a bit vague really. It would be better if you asked your own questions about things you find difficult when revising. Most people on here are American and have no idea what a GCSE syllabus contains. I'm British and I don't know. So if you ask about specific things then people can pass on their knowledge in that area.
 
Thanks I am not really sure what the tests are on but its most likely basic high school physics. just give me anything that you think i shall find usefull.
 
General advice would be to find out what exam board you are taking the exam with. Most exam boards now have websites where you can download your exact syllabus which is handy for revision. They also have past papers and mark schemes so you can see exactly what the examiners are looking for for particular types of question. Also if you get stuck on any particular concept when you're revising come here and ask about it, and hopefully someone can clarify that for you.
 
Thanks :approve:
 
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
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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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