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## hydromechanics

### 3. Series 25. Year - 2. river ride

Lock is placed in a dam on a river in order for ships to be able to pass through. Assume the river has a flow rate of $Q=200m⁄s$ and that the lock connects places with height difference $H=4\;\mathrm{m}$ and has dimensions $s=100\;\mathrm{m}$, $d=20\;\mathrm{m}$. How many ships per day can this lock transport from the lower place to the higher place if the maximum flow rate in and out of the lock is $Q_{Z}=250m⁄s?$

Napadlo Michala při čtení tajného časopisu.

### 5. Series 24. Year - 1. warm up

• blood sedimentation

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