Question

Коля обожает проводить эксперименты. В этот раз он измеряет давление жидкостей. Мальчик налил в мерный цилиндр три вещества: масло, воду и густой мёд, по 9 см каждой жидкости. Какое общее давление оказывают эти жидкости на дно сосуда? Плотность мёда прими за 1,4 г/см³

Answer 1

Ответ: 2997 Паскаль

Объяснение:

p масла = 930 кг/м в квадрате (примерно)

p воды = 1000 кг/м в квадрате

p мёда = 1400 кг/м в квадрате

g = 10

h =0.09 м

Для того чтобы найти давление нам нужно умножить плотность жидкости на высоту и скороть свободного падения.

1) 10*0.09*930 = 837 Па

2)10*0.09*1000 = 900 Па

3)10*0.09*1400 = 1260 Па

4)837+900+1260=2997 Па

Answer 2

Calculation of Total Pressure Exerted by Liquids

To calculate the total pressure exerted by the liquids in the measuring cylinder, we need to consider the pressure exerted by each liquid individually and then sum them up.

Let's calculate the pressure exerted by each liquid:

1. Water: - The height of the water column is given as 9 cm. - The density of water is approximately 1 g/cm³. - Using the formula for pressure, which is P = ρgh (where P is pressure, ρ is density, g is acceleration due to gravity, and h is height), we can calculate the pressure exerted by water. - Plugging in the values, we get P_water = (1 g/cm³) * (9 cm) * (9.8 m/s²) = 88.2 Pa.

2. Oil: - The height of the oil column is also given as 9 cm. - The density of oil is not provided in the question, so we'll need to make an assumption or use an average value. - Assuming the density of oil is approximately 0.9 g/cm³, we can calculate the pressure exerted by oil using the same formula as above. - Plugging in the values, we get P_oil = (0.9 g/cm³) * (9 cm) * (9.8 m/s²) = 79.38 Pa.

3. Honey: - The height of the honey column is again given as 9 cm. - The density of honey is provided as 1.4 g/cm³. - Using the formula for pressure, we can calculate the pressure exerted by honey. - Plugging in the values, we get P_honey = (1.4 g/cm³) * (9 cm) * (9.8 m/s²) = 123.48 Pa.

Now, let's calculate the total pressure exerted by the liquids:

Total Pressure = P_water + P_oil + P_honey = 88.2 Pa + 79.38 Pa + 123.48 Pa = 290.06 Pa

Therefore, the total pressure exerted by the liquids (water, oil, and honey) on the bottom of the vessel is approximately 290.06 Pa.

Please note that the values used for density and the assumption made for the density of oil are approximations.