The three factors that set convection currents in motion are: the heating and cooling of fluid, change in its density, and the force of gravity combine to set it in motion.<span>
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Answer:
a) conservation of the angular momentum
b) As a consequence of the interaction between particles.
Explanation:
A star is formed in a molecular cloud of gas and dust, mainly composed of hydrogen and helium. The Nebular Theory establishes, for the formation of the solar system, that the cloud starts to collapse under its own gravity when it receives a shock wave from a near event, for example, a supernova explosion. That results in the cloud breaking in small pieces, and those pieces constitute a possible future star.
Then it begins to accrete and rotate as a consequence of the angular momentum. In the center of that disk when it reaches the necessary temperature and pressure a protostar will born.
However, as the solar nebular condenses in the center due to its own gravity, the density increases, allowing more collisions between the particles that are in the nebula (atoms, free protons, etc), so the pressure rises and the temperature increases.
Answer:
C Iqaluq's observation belies a wider phenomenon. In summer 2020, due to intense summer heat, sea ice in the Arctic melted to its second-lowest extent on record.
Explanation:
Logic refers to the use of evidence to support one's argument. Statistics, facts, and data are used to back up the writer's argument. In the third option, the writer uses facts and figures to support his argument. He cited data on the Arctic melting in the summer of 2020.
The importance of logical reasoning is that the reader can reach a conclusion through the premises cited by the author. It is even more beneficial if the premises are data that can be verified.
To solve this problem it is necessary to apply the concepts related to Gauss's Law.
Gauss's law establishes that the flow of certain fields through a closed surface is proportional to the magnitude of the sources of that field inside the same surface.
Mathematically it can be expressed as,
![EA = \frac{Q}{\epsilon_0}](https://tex.z-dn.net/?f=EA%20%3D%20%5Cfrac%7BQ%7D%7B%5Cepsilon_0%7D)
Where
A = Surface area of Gaussian surface
Q = Charge enclosed by Gaussian surface
= Permittivity of free space
E = Electric Field
Our values are given as
![E = 100-500 = -400N/C](https://tex.z-dn.net/?f=E%20%3D%20100-500%20%3D%20-400N%2FC)
![A = 4\pi r^2 \rightarrw = 4\pi (0.2)^2 = 0.50m^2](https://tex.z-dn.net/?f=A%20%3D%204%5Cpi%20r%5E2%20%5Crightarrw%20%3D%204%5Cpi%20%280.2%29%5E2%20%3D%200.50m%5E2)
![\epsilon_0 = 8.854*10^{-12}C/Nm^2](https://tex.z-dn.net/?f=%5Cepsilon_0%20%3D%208.854%2A10%5E%7B-12%7DC%2FNm%5E2)
Therefore replacing at our equation we can find Q,
![EA = \frac{Q}{\epsilon_0}](https://tex.z-dn.net/?f=EA%20%3D%20%5Cfrac%7BQ%7D%7B%5Cepsilon_0%7D)
![(-400)(0.50) = \frac{Q}{8.854*10^{-12}}](https://tex.z-dn.net/?f=%28-400%29%280.50%29%20%3D%20%5Cfrac%7BQ%7D%7B8.854%2A10%5E%7B-12%7D%7D)
![Q = -1.7708*10^{-9}C](https://tex.z-dn.net/?f=Q%20%3D%20-1.7708%2A10%5E%7B-9%7DC)
Therefore the magnitude of the charge is ![-1.7708*10^{-9}C](https://tex.z-dn.net/?f=-1.7708%2A10%5E%7B-9%7DC)
The velocity equation is ![v_{final} =v_{initial} +at\\](https://tex.z-dn.net/?f=v_%7Bfinal%7D%20%3Dv_%7Binitial%7D%20%2Bat%5C%5C)
Known facts:
- t = 3.83s
- a= -3.04
- intial velocity = 0
Plug into equation known quantities:
![v_{final} = (-3.04) * 3.83 = -11.6432m/s](https://tex.z-dn.net/?f=v_%7Bfinal%7D%20%3D%20%28-3.04%29%20%2A%203.83%20%3D%20-11.6432m%2Fs)
Thus the final velocity is -11.6432m/s
Hope that helps!