Answer:
N = 2000 drops approx with 1 cm diameter each
Explanation:
Let the diameter of one drop is 1 cm
so volume of one drop is given by
![V = \frac{1}{6}\pi d^3](https://tex.z-dn.net/?f=V%20%3D%20%5Cfrac%7B1%7D%7B6%7D%5Cpi%20d%5E3)
now we have
![V = \frac{1}{6}\pi(0.01)^3](https://tex.z-dn.net/?f=V%20%3D%20%5Cfrac%7B1%7D%7B6%7D%5Cpi%280.01%29%5E3)
![V = 0.53 \times 10^{-6} m^3](https://tex.z-dn.net/?f=V%20%3D%200.53%20%5Ctimes%2010%5E%7B-6%7D%20m%5E3)
now in 1L of liquid let say N drops are there
so we have
![1L = 10^{-3} m^3](https://tex.z-dn.net/?f=1L%20%3D%2010%5E%7B-3%7D%20m%5E3)
now we have
![N = \frac{10^{-3}}{0.53 \times 10^{-6}}](https://tex.z-dn.net/?f=N%20%3D%20%5Cfrac%7B10%5E%7B-3%7D%7D%7B0.53%20%5Ctimes%2010%5E%7B-6%7D%7D)
![N = 2\times 10^3](https://tex.z-dn.net/?f=N%20%3D%202%5Ctimes%2010%5E3)
so it will have approx 2000 drops in it with diameter 1 cm each drop
General Characteristics of Acids & Bases. Chemists measure the strength of an acid or base by its pH, which is a term that refers to the "power of hydrogen.". The midpoint of the pH scale is neutral. Compounds with a pH lower than the midpoint value are acidic while those with a higher value are basic or alkaline.
Answer:
h = 0.362 m
Explanation:
The pressure equation with depth is
P₂ =
+ρ g h
The gauge pressure is
P2 -
= ρ g h
This is the pressure that muscles can create
P₂ -
= 3740 Pa
But still the person needs a small pressure for the transfer of gases, so
P₂ -
= 3740 - 188 = 3552 Pa
This is the maximum pressure difference, where the person can still breathe,
Let's clear the height
h = 3552 / ρ g
h = 3552 / (1000 9.8)
h = 0.362 m
This is the maximum depth where the person can still breathe normally.
Answer:
It would be B because the warm air heats up and then burns the marshmallow. And the heat and the marshmallow were touching each other
Explanation: