Answer:
a roller coaster at top.on hill
Explanation:
When there is no change in chemical composition of a substance then it is known as physical change.
When we say that mass is conserved during a physical change then it means that total mass of the substance or object will remain the same from beginning till the end.
For example, a metal box of mass 20 grams is beaten with hammer. Its shape will change which is a physical change and after beaten with the hammer its mass still remains 20 grams.
Answer:
Ball
Explanation:
We can set a system of equations for the objects and the systems:
![Ug_{1}=18g\\](https://tex.z-dn.net/?f=Ug_%7B1%7D%3D18g%5C%5C)
The density of water is 1kg/liter, therefore
![Ug_{2}=(2*1)*8g\\\\Ug_{2}=16g\\](https://tex.z-dn.net/?f=Ug_%7B2%7D%3D%282%2A1%29%2A8g%5C%5C%5C%5CUg_%7B2%7D%3D16g%5C%5C)
Compare Ug1 to Ug2:
![Ug_{1} > Ug_{2}](https://tex.z-dn.net/?f=Ug_%7B1%7D%20%3E%20Ug_%7B2%7D)
The answer to this question is
flatten
so the cloud must <u>flatten</u> eventually producing the galaxy s disk.
P = 10^5 - ρ (average)gh
where ρ (average) = average air density between 0 and 5000 m = (1.22+0.74)/2 = 0.98
we know g & h
I get P = 52470 Pa