Two microphones are placed 5.0m apart along a straight line. A hand clap occurs in front of the first microphone, and the second microphone detects it 0.015s after the first. Determine the speed of sound.
(a) 6.7×102m/s
(b) 3.0×102m/s
(c) 1.7×102m/s
(d) 3.3×102m/s