Question

Масса пустой трехлитровой канистры 370г. Какое давление будет оказывать канистра на горизонтальную поверхность,если её заполнить бензином? Площадь дна 400 см² пожалуйста решите в виде оформленной задачи!!!!!​

Answer 1

Дано:

m1 = 0,37 кг

V = 0,003 м³

S = 0,04 м²

ρ = 800 кг/м³

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Найти:

p - ?

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Решение:

1) p = F / S

2) m = m1 + м2 - масса канистры и керосина вместе

m2 = ρ * V => m = m1 + ρV

3) F = mg = (m1 + ρV)g - сила тяжести

4) p = (m1 + ρV)g / S

p = (0,37 + 800*0,003) * 10 / 0,04 = 692,5 Па ≈ 700 Па = 0,7 кПа

Ответ: 0,7 кПа.

Answer 2

Problem Statement:

A three-liter empty canister weighs 370g. What pressure will the canister exert on a horizontal surface if it is filled with gasoline? The area of the bottom of the canister is 400 cm².

Solution:

To solve this problem, we need to calculate the pressure exerted by the canister when it is filled with gasoline. Pressure is defined as the force per unit area. In this case, the force is the weight of the canister and the area is the bottom surface area of the canister.

1. Convert the weight of the canister from grams to kilograms: - Weight of the canister = 370g = 0.37kg

2. Calculate the force exerted by the canister: - Force = mass * gravity - The acceleration due to gravity is approximately 9.8 m/s². - Force = 0.37kg * 9.8 m/s²

3. Convert the area of the bottom of the canister from cm² to m²: - Area = 400 cm² = 0.04 m²

4. Calculate the pressure exerted by the canister: - Pressure = Force / Area

Let's calculate the pressure using the given values:

1. Convert the weight of the canister from grams to kilograms: - Weight of the canister = 370g = 0.37kg

2. Calculate the force exerted by the canister: - Force = 0.37kg * 9.8 m/s² = 3.626 N

3. Convert the area of the bottom of the canister from cm² to m²: - Area = 400 cm² = 0.04 m²

4. Calculate the pressure exerted by the canister: - Pressure = 3.626 N / 0.04 m²

Therefore, the pressure exerted by the canister when it is filled with gasoline is 90.65 Pa.

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