Theory Question (Kirchhoff's Law)

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Measuring terminal voltage after making a connection is crucial to confirm that the circuit sources are providing the expected voltage levels. This ensures that subsequent measurements will be accurate and reliable. If the terminal voltage is significantly lower than the source rating, it may indicate issues such as poor connections, internal resistance, or a failing power source. Identifying these problems early can prevent errors in the overall experiment. Accurate terminal voltage readings are essential for maintaining the integrity of electrical measurements.
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Homework Statement


To ensure the source's in the circuit are supplying the correct voltage for the experiment, we measured the terminal voltage. Why do we have to measure terminal voltage after the connection is made

Homework Equations





The Attempt at a Solution


if we check the terminal voltage and its right than we are ensuring that all our measurements will have little or no error?
 
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suppose the terminal voltage would be much lower than the rating of the source.
what could be the cause of that?
 
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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