Interpret the calculated answer from question 4 above

Comment on the sensitivity of the screening test

The following table contains data that were obtained from a hypothetical study of cervical cancer and long-term use of oral contraceptives. Those who consented were first examined for the presence of precancerous or cancer cells, using the pap smear test, and were only enrolled to participate if they had no sign of cervical cancer. The study took 40 years of two (2) yearly examinations. NB. Do not round-off the answers.Oral contraceptives Cervical cancer TotalYesNo Yes30050350No 10050150Total 400100500 Select the appropriate study design with a reason for the above scenario.

(15 points) Air at 300 K flows at a speed of 7 m/s over an isothermal plate at 400 K with a length of 2 m. (a) What is the average friction coefficient? (b) What is the average heat transfer coefficient?      

(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