Zkáza ponorky Titan ukázala, jakou silou disponuje kapalina, v závislosti na hloubce. Spočítejte, jak velká síla působila na 1cm2 plochy ponorky, v hloubce 4 km. Hustotu vody pro jednoduchost výpočtu uvažujte 1000 kg/m3. (nápověda: řešte nejdříve tlak v hloubce a z něj následně sílu na plochu)
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