Find the charge on the capacitor and the currents

Fatima Hasan
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Homework Statement


Capture.png


Homework Equations


##Q=CΔV##
##V=IR##

The Attempt at a Solution


C%281%29+%282%29%3A%5C%5CI_1%3D0.4A%5C%3A%5C%3A%5C%3A%20I_2%3D1.6A%5C%3A%5C%3A%5C%3AI_3%3D1.gif


Is my answer correct ?
 

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Fatima Hasan said:
Is my answer correct ?
Yes.
 
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Likes Fatima Hasan
Yes, your results look fine. You should, though, provide more comments in your working to explain what you are doing at each step.
 
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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