Question

Пожалуйста!!! 100 Баллов!!! Площадь дна кастрюли равна 990 см2. Найди, на сколько увеличится давление кастрюли на стол, если в неё налить воду объёмом 3 л. Принять g=9,8 Н/кг. Ответ (округли до целого числа): давление кастрюли на стол увеличится на ___ Па.

Answer 1

Ответ:

Объяснение:..........

Answer 2

Ответ:

Объяснение:

S = 990 см^2 = 0,099 м^2

V =  3 л. = 0.003 м^3

р = 1000 кг/м^3 плотность воды

g=9,8 Н/кг.

ΔP = ?

F1 = m*g  вес кастрюли

F2 = m*g + m2*g  вес кастрюли с водой

ΔF = F2 - F1 =  m*g - m*g + m2*g = m2*g

m2 = V*p

ΔF = V*p*g = 0.003*1000*9.8 = 29.4 H

ΔP = ΔF / S = 29.4 / 0.099 = = 297 Па

Answer 3

Calculation of Pressure Increase in the Pot

To calculate the increase in pressure in the pot when water is poured into it, we need to use the formula for pressure:

Pressure (P) = Force (F) / Area (A)

In this case, the force is the weight of the water poured into the pot, and the area is the area of the bottom of the pot.

Given: - Area of the bottom of the pot = 990 cm² - Volume of water poured into the pot = 3 L

To calculate the weight of the water, we need to use the formula:

Weight (W) = Mass (m) x Gravity (g)

Given: - Gravity (g) = 9.8 N/kg

To find the mass of the water, we can use the formula:

Mass (m) = Density (ρ) x Volume (V)

Given: - Density of water (ρ) = 1 g/cm³ = 1000 kg/m³ - Volume of water (V) = 3 L = 3000 cm³

Substituting the values into the formula, we can calculate the mass of the water:

Mass (m) = 1000 kg/m³ x 3000 cm³ = 3000000 g = 3000 kg

Now, we can calculate the weight of the water:

Weight (W) = 3000 kg x 9.8 N/kg = 29400 N

Finally, we can calculate the increase in pressure:

Pressure Increase (ΔP) = Weight (W) / Area (A)

Substituting the values into the formula, we can calculate the pressure increase:

Pressure Increase (ΔP) = 29400 N / 990 cm²

To convert the area from cm² to m², we divide by 10000:

Pressure Increase (ΔP) = 29400 N / (990 cm² / 10000) = 29400 N / 0.099 m²

Calculating the result:

Pressure Increase (ΔP) ≈ 297,000 Pa

Therefore, the pressure in the pot on the table will increase by approximately 297,000 Pa when 3 liters of water are poured into it.

Note: The answer has been rounded to the nearest whole number as requested.