This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.

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340 m/s
Huu hapa ni ufafanuzi na hesabu:
Step 1: Ufafanuzi wa jinsi mwangwi (echoes) huundwa. Mwangwi huundwa wakati mawimbi ya sauti yanapogonga uso mgumu, kama vile ukuta, mlima, au jengo, na kisha kuakisiwa (kurudi nyuma) kuelekea chanzo cha sauti. Akisi hii ya sauti ndiyo tunayosikia kama mwangwi. Ili mwangwi usikike wazi, lazima kuwe na umbali wa kutosha kati ya chanzo cha sauti na uso unaoakisi ili sauti iliyoakisiwa ifike masikioni baada ya sauti ya asili.
Step 2: Kukokotoa kasi ya sauti. Tunatumia fomula ya kasi, umbali, na muda: Katika kesi ya mwangwi, sauti husafiri umbali wa kwenda na kurudi. Kwa hivyo, umbali jumla uliosafiriwa na sauti ni mara mbili ya umbali kutoka kwa mvulana hadi kwenye jabali.
Umbali kutoka kwa mvulana hadi jabali () = Muda wa kusikia mwangwi () = Umbali jumla uliosafiriwa na sauti =
Step 3: Badilisha thamani kwenye fomula.
Kasi ya sauti ni:
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Huu hapa ni ufafanuzi na hesabu: Step 1: Ufafanuzi wa jinsi mwangwi (echoes) huundwa.
This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.