Calculating Electric Flux and Charge: A Problem-Solving Approach

AI Thread Summary
The discussion focuses on calculating electric flux through a closed surface with specific dimensions and a nonuniform electric field. Participants are reminded to follow forum rules by explaining their problem-solving approach and providing an attempted solution. The importance of clearly presenting the problem and any relevant diagrams is emphasized for effective assistance. The conversation highlights the need for collaboration and adherence to guidelines in seeking help with physics problems. Overall, the thread aims to facilitate understanding of electric flux calculations in complex scenarios.
nosracsan
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1. A closed surface with dimensions a = b = 0.400 m and c = 0.600 m is located as shown in the figure (be aware that the distance “a” in the figure indicates that the rectangular box sits a distance “at” from the y-z plane). The electric field throughout the region is nonuniform and given by:

PLEASE see attached Microsoft Word Document for the rest of the problem... its easier to view in there!
 

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Hi nosracsan

In order to receive help on PF, you must

(1) tell us how you think the problem could be solved and
(2) show us your attempted solution.

(forum rules)

The same goes for your thread on point charges.
 
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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