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EV1053 Basic Math for System Operators ASSIGNMENT 6 Problem Solving INSTRUCTIONS. Answer all questions. Show all your work in each case. This assignment will be due to the Assignment 6 Blackboard Dropbox on Wednesday, November 30, 2022 at 1 1:59 pm. TOTAL: 20 marks (2 marks per question) I. What is the daily flow (m3/d) in a 30 cm diameter pipe that is owing 70% full if the velocity is 60 m/min? 2. A rectangular tank 10 m long and 5 m wide can hold water to a depth of4 m. lfthis tank is lled by a pump in 2.5 h, what is the pumping rate in litres per second? 3. A 673 kg solution consists of 135 kg of alum and 54 kg of activated carbon powder with the balance water. What percentage of the solution by weight is water? 4. What happens to the volume of a sphere if its radius is doubled? 5. In the formula X = Y_2 . 2 if the value of Z stays the same but the value of Y is halved, what will happen to the value of X? 6. [fa pump delivers 4000 L in 2 hours, what is the pumping rate in: a) US? b) m3/d'? 7. A 10 in3 storage tank supplies alum for coagulation at a rate of 250 mL/min. How often will the tank need relling? 8. Determine the volume (in m3) ofa circular clarier of radius 600 cm and depth 3 m.. 9. Assuming the top is open, determine the total surface area (in m2) of the material required to construct the clarier referred to in Question 8. 10. How much 80" (1 ethanol will be required to raise the concentration of 50 L of 40% ethanol to 55%