Torricelli's Law states that the velocity of efflux of a fluid through a sharp-edged hole at the bottom of a tank filled to a depth 'h' is identical to:
A.The velocity of a sound wave in that fluid.
B.The velocity acquired by a freely falling body dropped from height 'h'.
Explanation:
Torricelli's Law is a direct application of Bernoulli's principle. It proves mathematically that the velocity of fluid exiting a small hole (efflux velocity v) is v = sqrt(2gh). This is exactly the same velocity a solid body would acquire if it fell freely under gravity from rest over the same vertical height 'h'.
Explanation:
Fuse needs low melting point to melt at overload, high resistance to generate more heat (I²R). Tin-lead alloy suitable. Copper high melting point, not fuse material.
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