Question

Дано: Объем( V ) = 2*10⁻³ Высота( h ) = 15 метров плотность(воды) = 1000кг/м³ плотность(камень) = 5000кг/м³ Нужно найти : Работа - ? ( A )

Answer 1

Ответ:

A=30

Объяснение:

1000/5000/15•5 за другим законом Ньютона

Answer 2

Given Information:

- Volume (V) = 2 * 10⁻³ cubic meters - Height (h) = 15 meters - Density of water = 1000 kg/m³ - Density of stone = 5000 kg/m³ - Work (A) needs to be found

Calculation:

To find the work (A), we need to calculate the force (F) first. The force can be calculated using the formula:

F = m * g

where: - m is the mass of the object - g is the acceleration due to gravity (approximately 9.8 m/s²)

The mass (m) can be calculated using the formula:

m = density * volume

Let's calculate the mass of the water and the stone.

For water: - Density of water = 1000 kg/m³ - Volume of water = 2 * 10⁻³ cubic meters

m_water = 1000 kg/m³ * 2 * 10⁻³ m³

For the stone: - Density of stone = 5000 kg/m³ - Volume of stone = 2 * 10⁻³ cubic meters

m_stone = 5000 kg/m³ * 2 * 10⁻³ m³

Now, let's calculate the force exerted by the water and the stone.

For water: F_water = m_water * g

For the stone: F_stone = m_stone * g

The total force (F_total) is the sum of the forces exerted by the water and the stone.

F_total = F_water + F_stone

Finally, the work (A) can be calculated using the formula:

A = F_total * h

Let's calculate the work (A) using the given information.

Calculation Steps:

1. Calculate the mass of water: - m_water = 1000 kg/m³ * 2 * 10⁻³ m³

2. Calculate the mass of the stone: - m_stone = 5000 kg/m³ * 2 * 10⁻³ m³

3. Calculate the force exerted by water: - F_water = m_water * g

4. Calculate the force exerted by the stone: - F_stone = m_stone * g

5. Calculate the total force: - F_total = F_water + F_stone

6. Calculate the work: - A = F_total * h

Solution:

Let's calculate the work (A) using the given information.

1. Calculate the mass of water: - m_water = 1000 kg/m³ * 2 * 10⁻³ m³ = 2 kg

2. Calculate the mass of the stone: - m_stone = 5000 kg/m³ * 2 * 10⁻³ m³ = 10 kg

3. Calculate the force exerted by water: - F_water = m_water * g = 2 kg * 9.8 m/s² = 19.6 N

4. Calculate the force exerted by the stone: - F_stone = m_stone * g = 10 kg * 9.8 m/s² = 98 N

5. Calculate the total force: - F_total = F_water + F_stone = 19.6 N + 98 N = 117.6 N

6. Calculate the work: - A = F_total * h = 117.6 N * 15 m = 1764 J

Therefore, the work (A) is 1764 Joules.