Calculate the pressure exerted by 75 cms of vertical length of a water column in SI units.
Options:
A. 7390Pa. B. 7560Pa. C. 7250Pa. D. 7350Pa.
To calculate the pressure exerted by a water column, we can use the formula:
Pressure = Density × gravitational acceleration × height
In this case, the height of the water column is given as 75 cm. However, to use this value in the formula, we need to convert it to SI units, which is meters.
1 meter = 100 cm, therefore 75 cm = 0.75 meters.
The density of water is approximately 1000 kg/m^3.
The gravitational acceleration is approximately 9.8 m/s^2.
Now, let's substitute these values into the formula:
Pressure = 1000 kg/m^3 × 9.8 m/s^2 × 0.75 m
Calculating this expression, we get:
Pressure = 7350 Pa
Therefore, the correct answer is option D: 7350 Pa.
weight of water per cm^2=.001*9.8*100h where h is in cm, so pressure (in P, we have to change are from cm^2 to m^2,
pressure=.0098*100h*10^4
pressure=.0098*75E4=