Проделайте опыт, изображенный на рисунке 47. когда резиновая трубка максимально отклонится от вертикали, перестаньте лить воду в воронку. пока оставшаяся в трубке вода вытекает, понаблюдайте, как будет меняться: а) дальность полета воды в струе (относительно отверстия в стеклянной трубке): б) положение резиновой трубки. объясните оба изменения.

Adiver named jacques observes a bubble of air rising from the bottom of a lake (where the absolute pressure is 3.50 atm) to the surface (where the pressure is 1.00 atm). the temperature at the bottom is 4.00 ∘c, and the temperature at the surface is 23.0 ∘c.what is the ratio of the volume of the bubble as it reaches the surface (vs) to its volume at the bottom (vb)? if jaques were to hold his breath the air in his lungs would be kept at a constant temperature. would it be safe for jacques to hold his breath while ascending from the bottom of the lake to the surface?

Awave has a wavelength of 7 mm and a frequency of 19 hertz. what is its speed?

Your friend increases her force on the desk by 30n . she doesn't change the direction of her push . what happens to the net force on the desk .will the desk accelerate