Where Do Physics and Chemistry Distinctly Diverge?

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Physics and chemistry share similarities, leading to questions about their distinct boundaries. The discussion emphasizes that both subjects can be explored, but chemistry-related inquiries should be directed to the appropriate subforum. Participants are encouraged to ask well-formulated questions without hesitation. Mentors are available to assist by relocating posts to the correct forum if necessary. Understanding the differences between these sciences can enhance the quality of discussions.
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1. The problem statement
physics and chemistry, are very similar in some respects. where can we draw the line between these two sciences?

(considering this is a physics forum, i want to know what i can and can't post!)
 
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You can post either, as long as you post chemistry questions in the chemistry subforum :-P
 
And if you happen to post in the wrong forum a mentor will be along shortly to move it to the correct forum. Never be afraid to ask well formulated and intelligent questions.
 

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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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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