Question about ELectric field and electric potential

AI Thread Summary
An electric dipole creates an electric field and potential that can vary at different points in space. It is possible for the electric potential and electric field to be zero at certain points along the X-axis due to the dipole's configuration. To calculate these values, one can use Coulomb's law and the principles of superposition. Understanding the concept of an electric dipole is essential for performing these calculations. Consulting course materials is recommended for detailed formulas and methods.
yosite
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I have a question.. between electric dipole in Y-axis... will the electric potential and electric field on some points along X-axis can be 0?? if this really can... can you show me the calculation or prove to get this?? THX
 
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Why don't you try calculating it yourself?
 
Because I don't know how... using what formula to count?... If I'm able to do it. Why I post and ask here...
 
yosite said:
Because I don't know how... using what formula to count?... If I'm able to do it. Why I post and ask here...
What is an electric dipole? Once you know what a dipole is, you can calculate the electric field using Coulomb's law. Consult your course text or lecture notes.
 
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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