(9 points) Water at 1 atm is heated in a mechanically polished stainless-steel pan, with its surface is electrically heated to Ts = 110°C. The pan’s diameter is 20 cm. What is the power required to boil the water? Use the following properties for your calculations: Tsat = 100°C, liquid phase’s density = 957.9 kg/m3, vapor phase’s density = 0.5956 kg/m3, liquid phase’s specific heat = 4217 J/(kg×K), liquid phase’s dynamic viscosity = 279×10-6 Pa×s, liquid phase’s Prandtl number = 1.76, hfg = 2,257,000 J/kg, Surface tension = 0.0589 N/m.

(18 points) Water at Tm,i = 27°C with a mass flow rate of 0.002 kg/s enters a 2 cm diameter, 5 m long circular tube, whose surface is at Ts = 45°C. Use the water’s inlet temperature when evaluating its properties. (a) What are pressure drop and pumping power required for the flow? (b) If you neglect the contribution of thermal entrance length, what is the heat transfer coefficient and mean outlet temperature?

(10 points) Calculate the heat transfer coefficient of the window ONLY at the outside. The window has a square shape with dimensions of 1m by 1 m. Assume the air is stagnant on both sides. The inside ambient temperature (Ti) is 50 °C, while the outside ambient temperature (To) is -50 °C. Use the table shown below to evaluate the fluid’s properties. Slight rounding of the temperature values is allowed without performing linear interpolation.

(9 points) A flat 0.8 m by 0.8 m double-pane window consists of two glass sheets separated by a 1 cm air gap (at 1 atm). The top-side glass is at a temperature of 14 °C, while the bottom-side glass is at a temperature of 40 °C.  What is the Nusselt number associated with the convective heat transfer between the two glass surfaces?

What is the mechanism of action of lumefantrine?                                                           1.        It inhibits the detoxification of the heme in the erythrocyte2.        Its metabolites produce reactive oxygen species which are fatal to the malaria parasite3.        It inhibits plasmodial dihydrofolate reductase required for the synthesis of tetrahydrofolate4.        Inhibits nucleic acid synthesis by oxidizing amoebic DNA5.        Inhibits plasmodial protein synthesis by binding to 30S ribosomal subunits

The following drug can cause anorexia                                                                                  1.        Metformin2.        Glimepiride3.        Repaglinide4.        Pioglitazone5.        Insulin

Concomitant use of the following drugs with sildenafil is potentially fatal:              1.        Lamivudine2.        Lidocaine3.        Isosorbide mononitrate4.        Omeprazole 5.        Tenofovir

The mechanism of weight gain in patients on antipsychotics relates to the following   effect:                                                                                                                                               1.        Direct effect on D2 receptors2.        Increased sensitivity to leptin 3.        H1 antagonism 4.        Prolactin suppression 5.        HT2c agonism 

The following anticancer drug is classified as an antimetabolite:                                   1.       Chlorambucil2.       Cyclophosphamide3.       Ifosfamide4.       Methotrexate5.       Melphalan

Predict the injury: What ligament is at most risk of being torn or strained when a baseball player severely hyperextends his knee while slipping on a base, (Bryce Harper, pictured to the right, recovered fully from this moderate sprain)?