Question

ФИЗИКА СРОЧНОК коромыслу весов подвесили два одинаковых гранитных грузика по 3 г и опустили один грузик в морскую воду, а другой - в спирт .Объясни, какой грузик перевесит . 1.Плотность спирта _____,чем плотность морской воды . 2.Сила Архимеда ,действующая на цилиндр в морской воде ,____,чем в спирте . 3. Вывод : перевесит грузик ,который опустили в ____.​

Answer 1

Ответ:

1.Плотность спирта меньше, чем плотность морской воды .

2.Сила Архимеда, действующая на цилиндр в морской воде, больше,чем в спирте .

3. Вывод: перевесит грузик, который опустили в спирт.​

Объяснение:

1. Таблица плотностей в помощь.

2. Сила Архимеда: F = p * V * g => чем больше плотность, тем больше сила Архимеда.

3. Перевесит тот груз, который имеет вес больше (вес, не масса!) => у кого меньше сила Архимеда, тот перевесит.

Answer 2

The Principle of Buoyancy and Archimedes' Principle

When two identical granite weights are suspended from a balance and one is submerged in seawater while the other is submerged in alcohol, we can determine which weight will be heavier by considering the principles of buoyancy and Archimedes' principle.

1. Density of Alcohol vs. Density of Seawater: - The density of a substance is defined as its mass per unit volume. - To determine which weight will be heavier, we need to compare the densities of alcohol and seawater. - The density of alcohol is typically lower than the density of seawater, which means that alcohol is less dense than seawater. This is because alcohol has a lower mass per unit volume compared to seawater. - Therefore, the density of alcohol is less than the density of seawater. [[1]]

2. Archimedes' Principle and Buoyant Force: - Archimedes' principle states that an object submerged in a fluid experiences an upward buoyant force equal to the weight of the fluid it displaces. - The buoyant force acting on an object is determined by the density of the fluid and the volume of the object. - When the granite weight is submerged in seawater, it displaces an amount of seawater equal to its own volume. The buoyant force acting on the weight in seawater is therefore determined by the density of seawater. - Similarly, when the granite weight is submerged in alcohol, it displaces an amount of alcohol equal to its own volume. The buoyant force acting on the weight in alcohol is determined by the density of alcohol. - Since the density of alcohol is less than the density of seawater, the buoyant force acting on the weight in alcohol is less than the buoyant force acting on the weight in seawater. [[2]]

3. Conclusion: - Based on the principles of buoyancy and Archimedes' principle, we can conclude that the weight submerged in seawater will be heavier. - This is because the buoyant force acting on the weight submerged in seawater is greater than the buoyant force acting on the weight submerged in alcohol. - Therefore, the weight submerged in seawater will have a greater effective weight compared to the weight submerged in alcohol.