A centrifugal water pump running at speed $\omega$=800 rpm has the following data for flow rate, Q, and pressure head, $\Delta p$.

$$\begin{matrix} \text{Q (}{ft^{3}/min)} & \text{0} & \text{50} & \text{75} & \text{100} & \text{120} & \text{140} & \text{150} & \text{165}\\ \text{}{\Delta p (psf)} & \text{7.54} & \text{7.29} & \text{6.85} & \text{6.12} & \text{4.8} & \text{3.03} & \text{2.38} & \text{1.23}\\ \end{matrix}$$

The pressure head is a function of the flow rate, speed, impeller diameter D, and water density $\rho$. Plot the pressure head versus flow rate curve. Find the two $\Pi$ parameters for this problem, and, from the above data, plot one against the other. By using Excel to perform a trendline analysis on this latter curve, generate and plot data for pressure head versus flow rate for impeller speeds of 600 rpm and 1200 rpm.

Five desks are listed at $400 each, with a trade discount series of$20/ 10/ 10$. Also,$10$bookcase s are listed at$\$200$ each, discounted $10/20/10$. Find the total net price for the desks and bookcase s.

A rectangular channel $3 \mathrm{~m}$ wide carries $10 \mathrm{~m}^3 / \mathrm{s}$ at a depth of $2 \mathrm{~m}$. Is the flow subcritical or supercritical? For the same flow rate, what depth will give critical flow?

The wall shear stress in a fully developed flow portion of a 12-in.-diameter pipe carrying water is 1.85 lb/ft$^{2}$. Determine the pressure gradient, $\partial p / \partial x$ where x is in the flow direction, if the pipe is (a) horizontal, (b) vertical with flow up, or (c) vertical with flow down.

Consider steady frictionless flow over a bump of height $\Delta z$ in a horizontal channel of constant width b. Will the flow depth v increase, decrease, or remain constant as the fluid flows over the bump? Assume the flow to be subcritical.

The pump shown in Fig. creates a flow such that $V=14 \mathrm{~m} / \mathrm{s}$. Predict the pressure at the gage shown assuming an inviscid flow in the entrance and a uniform flow at the gage. Use a streamline starting at: (a) Point $A$ (b) Point $B$

Flow occurs in a rectangular channel of 6 m width and has a specific energy of 3 m. Plot accurately the relation between depth and specific energy. Determine from the curve (a) the critical depth, (b) the maximum flow rate, (c) the flow rate at a depth of 2.4 m, and (d) the depths at which a flow rate of 28.3m$^{3}$/s may exist, and (e) the flow condition at these depths.

List in tabular form similarities and differences between the flow of charge along a conductor, the flow of water through in horizontal pipe, and the conduction of heat through a slab Consider such ideas as what causes the flow, what opposes it what particles (if any) participate, and the units in which the flow may be measured.

Which of the following statements about continental glacial movement is correct?

A. Continental glaciers can only flow uphill.

B. Continental glaciers can flow in all directions.

C. Continental glaciers can only flow downhill.

D. Continental glaciers can do not flow at all.

What is the staff looking for as they monitor the conduct of operations during execution?

In order to pay for dental work, you borrow $\$8000$ on an $8 \%$ discounted loan for a period of three years.
a. What is the loan's discount?
b. Determine the net amount of money you receive.
c. What is the loan's actual interest rate?

A flow of water at 2000 kPa, 20$^{\circ} \mathrm{C}$ is mixed with a flow of 2 kg/s water at 2000 kPa, 180$^{\circ} \mathrm{C}$. What should the flow rate of the first flow be to produce an exit state of 200 kPa and 100$^{\circ} \mathrm{C}$?

"Hudson Corporation is considering three options for managing its data warehouse: continuing with its own staff, hiring an outside vendor to do the managing, or using a combination of its own staff and an outside vendor. The cost of the operation depends on future demand. The annual cost of each option (in thousands of dollars) depends on demand as follows:

$$\begin{array}{lccc} & {\text { Demand }} \\ \text { Staffing Options } & \text { High } & \text { Medium } & \text { Low } \\ \text { Own Staff } & 650 & 650 & 600 \\ \text { Outside Vendor } & 900 & 600 & 300 \\ \text { Combination } & 800 & 650 & 500 \end{array}$$

If the demand probabilities are 0.2, 0.5, and 0.3, which decision alternative will minimize the expected cost of the data warehouse? What is the expected annual cost associated with that recommendation?"

In order to pay for wedding expenses, you borrow $\$ 20.0001$ on a $6 \%$ discounted koan for a period of four years
a. What is the loan's discount?
b. Determine the net amount of money you receive.
c. What is the loan's actual interest rate?