Question

Describe your materials and methods needed to test Torricelli’s law.

Answer 1

Torricelli’s equation, statement that the speed, v, of a liquid  flowing under the force of gravity out of an opening in a tank is proportional jointly to the square root  of the vertical distance, h, between the liquid surface and the centre of the opening and to the square root of twice the acceleration caused by gravity, 2g, or simply v = (2gh)1/2. (The value of the acceleration caused by gravity at the Earth’s surface is about 32.2 feet per second per second, or 9.8 metres per second per second.) The theorem is named after evangelised Torrciell , who discovered it in 1643.

The speed of a portion of water flowing through an opening in a tank a given distance, h, below the water surface is the same as the speed that would be attained by a drop of water falling freely under the force of gravity alone (that is, neglecting effects of air) through the same distance, h. The speed of efflux is independent of the direction of flow; at the point of the opening the speed is given by this equation, whether the opening is directed upward, downward, or ho

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Answer 2

here is the answer for your question


 hey dude..

Torricelli's law describes the parting speed of a jet of water, based on the distance below the surface at which the jet starts, assuming no air resistance, viscosity, or other hindrance to the fluid flow.

 This diagram shows several such jets, vertically aligned, leaving the reservoir horizontally. In this case, the jets have an envelope (a concept also due to Torricelli) which is a line descending at 45 degrees from the water's surface over the jets. Each jet reaches farther than any other jet at the point where it touches the envelope, which is at twice the depth of the jet's source.

 The depth at which two jets cross is the sum of their source depths. Every jet (even if not leaving horizontally) takes a parabolic path whose directrix is the surface of the water.
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