Oil flows through the Alaska pipe line on a clear, sunny day. The flow in the pipe can best be classified as:
(A) Uniform
(B) Developed
(C) Two-dimensional
(D) Cylindrical
(B) Developed
The flow is definitely not 2D nor is it cylindrical (this is not a type of flow, only a certain coordinate system), so that leaves either (A) or (B). The flow would be at most one-dimensional, u = u(r). It is certainly a developed flow, i.e., the velocity does not depend on the flow direction, u ? u(x).
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(a) What reactions occur at the two electrodes? (b) What voltage is developed in the cell? (c) What is the Gibbs free energy change per mole of ions involved in the reaction?
Three 6.0-? resistors are connected in parallel. What is their equivalent resistance?
a. 0.083 ? b. 3.0 ? c. 0.50 ? d. 2.0 ? e. 6.0 ?
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What will be an ideal response?
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