I think the best example of rotational motion is :
The wheel spins as long as the hamster keeps running
Rotational motion refer to a rotation movement in which the main axis point stays the same
hope this helps
The block will sink
Explanation:
In general, an object with a higher density than water will sink in it, and one with a lower density will float. Now, to know if the block will float or sink, the first step is to calculate the density of the block, and to do this, the volume and mass of the block are required.
Mass of the block: 30 grames
Volume of the block:
The volume of the block is not provided, but this can be found using the dimensions given.
V (Volume) = s (side) x s x s
V = 1.5 cm x 4.8 cm x 2.3 cm
V = 16.56 
Density of the block:
To find the density simply divide the mass into the volume
D (density) = M (Mass) ÷ V (Volume)
D = 30 grams ÷ 16.56 
D = 1. 811 grams/ 
The density of the block is 1. 811 grams/ 
Additionally, the density of the water is 1 gram/
or 1 gram/mL. According to this, the density of the block is higher than the density of the water, and therefore this is the block sinks.
Protons: 12
Neutrons: 13
<span>Electrons: 12</span>
You can use a universal indicator. The color of the universal indicator before contact with other chemicals is green, which is the pH of 7. We know that bottled water is pH 7. So when we put a few drops of universal indicator, the color would be green indicating neutral pH.
Mg is what you measure them in