Answer:B 20 newtons opposite to the direction of the applied force
Explanation:
\Delta L= \alpha L_0 (T_f-T_i)
= (18 x 10^-6 /°C)(0.125 m)(100° C - 200 °C)
= -0.00225 m
New length = L + ΔL
= 1.25 m + (-0.00225 m)
= 1.248
So your answer is B.
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Answer:
<em>20.08 Volts</em>
Explanation:
<u>Parallel Connection of Capacitors</u>
The voltage across any two elements connected in parallel is the same. If the elements are capacitors, then each voltage is


They are both the same after connecting them, thus

Or, equivalently

The total charge of both capacitors is

We can compute the total charge by using the initial conditions where both capacitors were disconnected:

Now we compute Q1 from the equation above

The final voltage of any of the capacitors is
