Question

До какого уровня нужно залить в канистру бензин, чтобы он оказывал давление на дно, равное 2840 Па? (просьба написать с разъяснением)

Answer 1

P - давление

P=pgh

p -плотность

нужно найти h

h=P/pg=2840/710*10=0,4 м= 40 см

Answer 2

Calculating the Level of Gasoline in a Canister to Exert a Pressure of 2840 Pa

To calculate the level of gasoline needed in a canister to exert a pressure of 2840 Pa at the bottom, we can use the following formula:

Pressure at a depth in a liquid = Density of the liquid × Acceleration due to gravity × Height of the liquid column

Where: - Pressure at a depth in a liquid is the pressure exerted by the liquid at a certain depth. - Density of the liquid is the density of the liquid (in this case, gasoline). - Acceleration due to gravity is the acceleration experienced by an object due to the gravitational force. - Height of the liquid column is the height of the liquid in the canister.

We can rearrange the formula to solve for the height of the liquid column.

Calculation

Given: - Pressure at the bottom = 2840 Pa - Density of gasoline = 720 kg/m³ (typical density of gasoline)

We can rearrange the formula to solve for the height of the gasoline column:

Height of the gasoline column = Pressure at the bottom / (Density of gasoline × Acceleration due to gravity)

Using the standard acceleration due to gravity of 9.81 m/s², we can calculate the height of the gasoline column:

Height of the gasoline column = 2840 Pa / (720 kg/m³ × 9.81 m/s²)

Height of the gasoline column ≈ 0.39 meters

So, to exert a pressure of 2840 Pa at the bottom of the canister, the gasoline level needs to be approximately 0.39 meters high.

Conclusion

To exert a pressure of 2840 Pa at the bottom of the canister, the gasoline level needs to be approximately 0.39 meters high.