# Calculate the specific weight of water

• dimens
In summary, the specific weight of water is 9.81 kN/m³ at 4 °C and can be calculated by dividing the weight of water by its volume. It is important in engineering and scientific applications, and changes with temperature. The units used to measure it are typically kN/m³, but it can also be measured in lb/ft³ or N/m³.
dimens

## Homework Statement

Determine the specific weight of water at a pressure of 100 KN/m2 absolute and 10˚C temperature.

## Homework Equations

I was thinking it's p=γh

## The Attempt at a Solution

But there's no height?

The only way to determine the density is to take it from tables, or measure it experimentally.

## 1. What is the specific weight of water?

The specific weight of water is 9.81 kN/m³ at 4 °C. This value is often used in engineering calculations to determine the weight of water in a given volume.

## 2. How do you calculate the specific weight of water?

The specific weight of water can be calculated by dividing the weight of water by its volume. The weight of water can be found by multiplying its density (1,000 kg/m³) by the acceleration due to gravity (9.81 m/s²).

## 3. Why is the specific weight of water important?

The specific weight of water is important in various engineering and scientific applications. It is used in determining the buoyancy of objects, designing water systems, and calculating the weight of water in hydraulic systems.

## 4. Does the specific weight of water change with temperature?

Yes, the specific weight of water changes with temperature. At 4 °C, the specific weight of water is 9.81 kN/m³. As the temperature increases, the specific weight decreases, and as the temperature decreases, the specific weight increases.

## 5. What units are used to measure the specific weight of water?

The specific weight of water is typically measured in kilonewtons per cubic meter (kN/m³). However, it can also be measured in pounds per cubic foot (lb/ft³) or newtons per cubic meter (N/m³).

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