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I cut a quarter circle out of paper. how many angles does this shape have? Find the induced emf when the current in a 45.1 mH inductor increases from 0 to 512 mA in 18.3 ms? A rectangle has a perimiter of 26 feet. Twice its length (/) is one foot more than three times its width (w).? The density of molecular oxygen inside a gas tank is 266 g/l. What is the pressure inside the gas tank if it is kept at 20*C.? Can you help me with an algebra problem? Please show your work if possible.?