Events 1 and 2 are exploding firecrackers that each emit light pulses. in the reference frame of the detector, event 1 leaves a char mark at a distance 3.40 m from the detector, and event 2 leaves a similar mark at a distance 2.10 m from the detector. if the two events are simultaneous in the reference frame of the detector and occur at instant t=0, at what instant of time will each light pulse be detected?

explain the answer.