Shell-and-tube heat exchanger is used to cool oil (ch 2.2 kj/kg ? k) from 110°c to 65°c. the heat exchanger has two shell passes and four tube passes. the coolant (cc 4.20 kj/kg ? k) enters the shell at 20°c and leaves the shell at 42°c. for an overall tube-side heat-transfer coefficient of 1200 w/m2 ? k and an oil flow of 11 kg/s, determine a. the coolant mass flow rate b. the required surface area in the exchanger

Find the vertex(use the completing the square method), findthe x- and y-intercepts, and sketch the graph offunction. y = 2x2 + 4x - 1

The government has declared that a hurricane is likely to hit the east coast. which government division is part of acf and provides guidance to citizens? a. job opportunities for low-income individuals b. office of human services emergency preparedness and response c. assets for independence d. low-income home energy assistance program

Click the game tab at the bottom of the simulation and select level 1. (there is no seesaw balance for this part of the activity.) balance the first equation, and click check to see if you got it right. if you can’t balance it in the first try, you can try again. work through the five equations for level 1. click continue to go on to level 2, and later level 3. each level is more difficult than the one before. keep trying until all the equations are balanced. in one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.