A mass of 120g half immersed in water displaced a volume of 20cm³. Calculate the density of the object.

Here are the solutions to the questions:

36. A mass of 120g half immersed in water displaced a volume of 20cm³. Calculate the density of the object.

Step 1: Determine the total volume of the object.
Since the object is half immersed and displaces 20 cm³, its total volume is twice the displaced volume.

$$V_{object} = 2 \times V_{displaced}$$ $$V_{object} = 2 \times 20 \text{ cm}^3 = 40 \text{ cm}^3$$

Step 2: Calculate the density of the object.

$$\rho_{object} = \frac{m_{object}}{V_{object}}$$ $$$$