The head will face the air because it is hydrophilic. The tails are hydrophobic
When a cardboard is slowly pulled let's say for example there was a coin which is placed on the top of the cardboard and then the cardboard is pulled slowly the coin which is on top moves with it.
There is a friction force which is being applied between the coin and the cardboard which makes the coin to continue moving with the cardboard.
If it is flicked, the coin will not move will remain and cardboard will move.
The coin did not move because of its tendency to remain at inertia.
Answer:
It would be difficult to recreate the exact conditions of the chemical release elsewhere.
Explanation:
Answer:
Volume= 4 cm³
Density= 2 g/cm³
Explanation:
We have the following data:
volume= V= 8 cm³
mass= m= 16 g
The density is the mass per volume of a substance, so the density of the rock is:
density= d= 16 g/8 cm³= 2 g/cm³
When we cut the rock in half, we have a half volume and a half mass:
V= 8 cm³/2= 4 cm³
m= 16 g/2= 8 g
But the density is not altered because it is an intrisic property - it does not change with the amount of subtance. Thus, the density of a half rock is:
d = m/V= 8 g/4 cm³= 2 g/cm³
