Question

Question #b140b

Answer 1

`14,000Pa`

Explanation:

Total pressure acting on the floor = Atmospheric Pressure + Pressure acting from surface to 0.4m

Atmospheric pressure is given, which is 10,000 Pa.

Pressure at the given depth can be calculated using the formula

`P=rhogh`

• `rho`(rho) is the density of the water: `1000 kgm^-3` (given).
• `h` is the depth from the surface to the floor: `0.4m` (given).
• `g` is the value for acceleration due to Earth's gravity: `10 ms^-2` (given).

By plugging in all these values into the formula, we can solve for the pressure.

`P=1000*10*0.4=4,000Pa`

This is the pressure acting from the surface to the floor.

To find the total pressure, we add the atmospheric pressure to it.

Total Pressure = `4,000 + 10,000=14,000Pa`

Therefore, the total pressure acting on the floor under the water is `14,000Pa`.