The equilibrium fraction of lattice sites that are vacant in gold at 800°C is 2.5 × 10-5. Calculate the number of vacancies (per
1 answer:
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Answer:
a.) -147V
b.) -120V
c.) 51V
Explanation:
a.) Equation for potential difference is the integral of the electrical field from a to b for the voltage V_ba = V(b)-V(a).
b.) The problem becomes easier to solve if you draw out the circuit. Since potential at Q is 0, then Q is at ground. So voltage across V_MQ is the same as potential at V_M.
c.) Same process as part b. Draw out the circuit and you'll see that the potential a point V_N is the same as the voltage across V_NP added with the 2V from the other box.
Honestly, these things take practice to get used to. It's really hard to explain this.
Answer:
It's indeed safer to suggest a 150 VA transformer. Following table however is the clarification given.
Explanation:
For 2 motors with 0.1 A, the Power will be:
P =
=
For 4 motors with 0.18 A, the Power will be:
P =
=
As we know, for 6 pilot lamps, the power is "5 W".
So,
The total power will be:
⇒ P =
=
Now,
Consider the power factor to be "0.95"
VA of transformer is:
=
=
=