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Ksenya-84 [330]
2 years ago
10

Tính hiệu suất nhiệt của động cơ nhiệt biết nhiệt lượng ở nguồn nóng 420,4kJ/kg và nhiệt lượng ở nguồn lạnh 218kJ/kg.

Physics
1 answer:
Travka [436]2 years ago
6 0

Answer:

69

Explanation:

just because

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Explanation:

(a) speed = 60mph = 60m/1h × 1h/3600s = 0.017m/s, time = 10s

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