What is sonar ( sound navigation and ranging )?

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When the seas freeze in-winter, the fish never die why?

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What is supersonic?

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Find the physical quantity in units from the equation: (Force*Distance)/(Velocity*Velocity)

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Giraffe in Arabic means "the highest of all." The height of a giraffe is an average of 5 m, its mass is about 800 kg and hooves is an area of approximately 625 cm2. Using a straw from a material nedeformabil a giraffe trying to drink water from a lake, not to condescend. What is the ratio of the minimum pressure to be applied giraffe, mouth, at the end paiului to drink water and pressure of giraffe on the ground. The density of water. g = 10 m/s2

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How is nuclear fission different from nuclear fusion?

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Explain Transparent body ?

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An ice-box is built of wood 1.75 cm thick, lined with cork 3 cm thick. If in the steady state the temperature of the inner surface of the cork is 0 ºC and that of the outer surface of wood is 12 ºC, what is the temperature of the wood-cork interface? The thermal conductivities of wood and cork are 0.2 W/m-K and 0.04 W/m-K respectively

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How about the particle-wave duality? : quantum physics

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How do fireworks turn into shapes like hearts and stars?

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What is the homogenous?

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Describe and interpret qualitatively the evidence provided by electron diffraction for the wave nature of particles. : quantum physics

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