drakespages3021 drakespages3021 30-03-2018 Mathematics contestada Two pulses traveling on the same string are described by y1 = 5 (a x − b t) 2 + 2 and y2 = −5 (a x + b t − 6)2 + 2 where a = 9 m−1 and b = 10 s−1 . at what time do the two cancel? answer in units of s.