Asample of an unknown liquid has a volume of 12.0 ml and a mass of 6 g. what is its density? show your work or explain how you determined this value

Density, d = 0.5 g/mL

Explanation:

It is given that,

Mass of the unknown liquid, m = 6 g

Volume of unknown liquid, V = 12 mL

Density is defined as the mass of the liquid divided by its volume. Mathematically, it is given by :

d = 0.5 g/mL

So, the density of the unknown liquid is 0.5 g/ml. Hence, this is the required solution.

The angle is 23.2 radians, equivalent to 3.69 revolutions.

Explanation:

First, we need to find the angular acceleration of the wheel. This can be done using one of the kinematic formulas:

Since the final angular velocity is zero after 5.5 revolutions (equivalent to 11π radians) we have that:

Now, using the same equation, we can solve for the requested angle:

Finally, it means that the angle through which the wheel has turned when the angular speed reaches 1.80 rad/s is 23.2 radians, equivalent to 3.69 revolutions.