Explain This: Need Help Starting - Ask Here

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The discussion centers on a user seeking help to start a problem but struggling to articulate their question effectively. Respondents emphasize the importance of clearly defining questions and attempting to solve them individually for better assistance. They advise breaking down the problem and showing any relevant work or thought processes. Constructive feedback is encouraged to foster learning and understanding. Overall, the conversation highlights the need for clarity and effort in seeking help.
Jbright1406
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I don't even know where to start. could someone please explain, ill do the work, i just don teven know how. Thanks
 
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not only do you not put the topic of your question in the heading you don't even explain it in your post. do you really expect a reply?
 
First, sorry on the Title. Second Thanks for the flame. What do you want me to explain in the post. It has the problems, i don't have any clue as to how to even get started. I posted a screenshot of the problem and questions regarding it. Now constructive criticism might be of more help to me in the future.


And last if you would ahve looked at the entire post, under the screenshot, i did explain what i needed to
 
Jbright1406 said:
First, sorry on the Title. Second Thanks for the flame. What do you want me to explain in the post. It has the problems, i don't have any clue as to how to even get started. I posted a screenshot of the problem and questions regarding it. Now constructive criticism might be of more help to me in the future.And last if you would ahve looked at the entire post, under the screenshot, i did explain what i needed to

We understand what you need - the answers. But that isn't the way it works.

You must break the questions apart and make an attempt to solve them individually in a separate thread(s).
You need to show your work so someone can help you.
That includes what formulas you think applies and, if stumped, how you might go about it and what you think you need to know to do it.
 
That what i was asking for, i don't even know how to begin. i wanted guidance on how to go about answering, not the answers
 
Jbright1406 said:
That what i was asking for, i don't even know how to begin. i wanted guidance on how to go about answering, not the answers

OK then. Break out the first question and start a new thread.

You will need to show some thought other than "I have no idea."
Because I for one will just ask you again what you know a about it.

If it's for a class then think about what has been covered in class and why they give you the problem.
 
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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