Question

Определите давление, которое оказывает нож на хлеб, если к его ручке прикладывают силу 35Н, а площадь лезвия 0,3 см². Ответ запишите в Па​

Answer 1

S = 0,3 см² = 3 · 10^-5 м²

F = 35 Н

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p - ?

p = F/S = 35/(3·10^-5)≈1170000 Па

Answer 2

Calculation of Pressure Exerted by a Knife on Bread

To calculate the pressure exerted by a knife on bread, we can use the formula:

Pressure = Force / Area

Given: - Force applied to the handle of the knife = 35 N - Area of the blade = 0.3 cm²

First, let's convert the area from cm² to m²: - 1 cm² = 0.0001 m²

Therefore, the area of the blade in square meters is: - 0.3 cm² * 0.0001 m²/cm² = 0.00003 m²

Now, we can calculate the pressure: - Pressure = 35 N / 0.00003 m²

Using a calculator, we find that the pressure exerted by the knife on the bread is approximately 1,166,666.67 Pa.

Please note that this calculation assumes that the force is evenly distributed over the entire area of the blade and that the knife is perpendicular to the bread surface.