How would you find Va and Vb in the problem below?

AI Thread Summary
The discussion centers around a newcomer seeking help with a physics problem involving velocities Va and Vb. The user expresses confusion due to unclear textbook explanations and a lack of familiarity with the concepts. Participants emphasize the importance of following the homework template and showing attempts at solutions. A hint is provided to look up the sine rule, which the user acknowledges as a helpful reminder. The conversation highlights the need for clarity in problem-solving and adherence to guidelines in academic assistance.
ryan578
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Member advised to use the homework template for posts in the homework sections of PF.
Hi I am new the site and have to complete this physics summer work from a not so clear textbook. I am also new to a lot of the concepts and material. I was unsure on how i go about solving velocity a and b in this problem:
upload_2016-9-3_16-22-4.png
any help is appreciated
 
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:welcome:
You are not supposed to omit the homework template provided. You should show your attempt at a solution.
ryan578 said:
Hi I am new the site and have to complete this physics summer work from a not so clear textbook. I am also new to a lot of the concepts and material. I was unsure on how i go about solving velocity a and b in this problem: View attachment 105447any help is appreciated
Hint: Look up 'sine rule'.
 
cnh1995 said:
:welcome:
You are not supposed to omit the homework template provided. You should show your attempt at a solution.

Hint: Look up 'sine rule'.

Forgot about the sine rule. Thank you!
 
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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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