Question

Can u plz help with # 1 and 2

Answer 1

Greetings!

1)

As stated, $Density = \frac{mass}{volume}$ , so if you plug all the values in: 100ml volume and 0.196g:

$\frac{0.196}{100}$ = 0.00196

2)

First, you need to find the total volume of the wood. If it has a width of 3cm on each side this means its a cuboid. The formula for the volume of a cuboid is:

$x^{3}$

Where in this case x = 3:

$3^{3}$ = 27, so the volume is 27.

Now we know the volume and mass so we can simply divide the two:

$\frac{27}{27}$ = 1, so the density is 1g/cm$^{3}$

Hope this helps!