A square groove weld symbol is assumed to have a root opening if there is a value shown within it.
Answer the following statement true (T) or false (F)
True
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Male cockatiels usually have brighter orange or yellow about their head and cheeks than the females
Indicate whether the statement is true or false
When shutting off a torch, first close the ____________________ valve, and then close the
____________________ valve.
Fill in the blank(s) with the appropriate word(s).PROBLEM 3.33
Determine the smallest allowable diameter of a 10-ft-long steel rod (G = 11.2 × 106 psi) if the rod is to be twisted through 90? without exceeding a shearing stress of 15 ksi.
For the circuit shown in Figure P5.41, assume that switch S1 is always held open and that switch S2 is open until being closed at t = 0. Assume DC steady-state conditions for t < 0. Also assume
R1 = 5?, R2 = 4?, R3 = 3?, R4 = 6?, and
C1 = C2 = 4F.
a. Find the capacitor voltage vC at t = 0+.
b. Find the time constant ? for t > 0.
c. Find vC for all time and sketch the function.
d. Evaluate the ratio vC to vC (?) at each of the following times: t = 0, ?, 2?, 5?, 10? .
