A two-meter-high tank is full of water. A hole is made in the middle of the tank. The speed of efflux is
Correct answer: A. 4.9m/s
- A. 4.9m/s
- B. 9.8 m/s
- C. 4.42 m/s
- D. 3.75 m/s
Explanation
To find the speed of efflux from a hole in a container filled with water, Torricelli's theorem is used: v = \sqrt{2gh}, where g is the acceleration due to gravity 9.8m/s^2 and h is the depth of the water above the hole. Substituting h = 1m, we get v = \sqrt{2 \times 9.8 \times 1} = 4.9m/s.
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