Question

A log has a density of .8 g/cm³. This log will in freshwater, which has a density of 1.0 g/cm³ .

Answer 1

The log will sink in freshwater.

This happens because denser materials always sink in less dense materials. The log is denser than the water in this case, so it will sink.

Hope this helps!

Answer 2

Answer:

b) Float

Explanation:

This question is incomplete. This is the complete question :

A log has a density of $.8\frac{g}{cm^{3}}$. This log will ______ in freshwater, which has a density of $1.0\frac{g}{cm^{3}}$

a) Move

b) Float

c) Move deeper

d) Decrease density

When we have an object with an uniform density and we want to know if this object will float or not in certain fluid, we need to compare both densities.

If the density of the object is greater than the fluid density the object will sink. Otherwise, if the density of the object is lower than the density of the fluid, the object will float.

If we compare the two densities :

$Density_{(log)}=0.8\frac{g}{cm^{3}}$

$Density_{(water)}=1.0\frac{g}{cm^{3}}$

$1.0\frac{g}{cm^{3}}>0.8\frac{g}{cm^{3}}$  ⇒

$Density_{(water)}>Density_{(log)}$

We conclude that the log will float in the water.

The correct option is b) Float