Question

The block in the illustration is floating in water. Water has a density of 1.0 g/cm 3 and about 30 percent of the block is below water. What is a good estimate of the density of the block?

Answer 1

that's true

Step-by-step explanation:

Answer 2

Answer: The density of the block is estimated to be
`0.30 g/cm^3`.

Step-by-step explanation:

Density of the water,
`\rho_w=1.0 g/cm^3`

Buoyant force =
`\rho* volume* g`

g = gravitational acceleration

volume of the block = v

density of the block =
`\rho_o`

Weight of the Block = Buoyant force exerted by water

`rho_o* v* g=\rho_w* 30\%\text{of volume of block}* g`

`\rho_o* v* g=\rho_w* 0.30v* g`

`\rho_o* v* 9.8 m/s^2=1 g/cm^3* 0.30v* 9.8 m/s^2`

`\rho_o=0.30 g/cm^3`

The density of the block is estimated to be
`0.30 g/cm^3`.