Final answer:
The water pressure at the foot of the Aswan High Dam, which is 111 m high, is calculated to be approximately 1.09 MPa, using the formula for pressure due to a column of liquid.
Step-by-step explanation:
To calculate the water pressure at the foot of the Aswan High Dam, which is 111 m high, you use the formula for pressure due to a column of liquid:
P = ρgh
Where:
- P is the pressure,
- ρ (rho) is the density of water (approximately 1000 kg/m3),
- g is the acceleration due to gravity (9.8 m/s2),
- h is the height of the water column.
Inserting the values, we get:
P = 1000 kg/m3 × 9.8 m/s2 × 111 m = 1,088,800 Pa
Since 1 MPa = 1,000,000 Pa, we convert the pressure to megapascals:
P = 1.0888 MPa ≈ 1.09 MPa.
Therefore, the correct answer to the question is (a) 1.09MPa.