Previous Problem Problem List Next Problem At least one of the answers above is NOT correct. An electric current flowing in a circuit (consisting of a battery of V volts and a resistor of R ohms connected in series), satisfies di dt -k ( I - b) for some constants k and b with k > 0. Initially, I (0) = 0 and I (t) approaches a maximum level R as t -> co. (a) What is the value of b? b = (b) Find a formula for I (t) in terms of k, V, and R. I(t ) = (c) What percent of its maximum value does I (t) reach at time t = ? Note: You can earn partial credit on this problem. Preview My Answers Submit Answers Your score was recorded. You have attempted this problem 9 times. You received a score of 67% for this attempt. Your overall recorded score is 67%. You have unlimited attempts remaining. Mar 7 9:52 31 MCourse Hero X MInbox (295) - cgr010@bucknell.e x G For this problem, use equation ( X ell.edu/webwork2/23SPMA202-05-06/Assignment_12/5/?effectiveUser=cgr010&displayMode=MathJax&showOldAnswers=1&showProblemGrad. Previous Problem Problem List Next Problem Assignment 12: Problem 5 (4 points) For this problem, use equation (3) from section 9.2 as a model for free-fall with air-resistance. Mass and weight are related by w = mg, and equation (3) becomes kg w with g = 32 it Find the terminal velocity of a skydiver of weight w = 150 lb if k = 1 1bs How long does it take him to reach half of his terminal velocity if his initial velocity is zero? Note: You can earn partial credit on this problem. Preview My Answers Submit Answers You have attempted this problem 9 times. Your overall recorded score is 50%. 9:52 31 9 M O D Mar 7