1.Paper Chromatography. This method is often used in the food industry. ...
2.Filtration. This is a more common method of separating an insoluble solid from a liquid. ...
3.Evaporation. ...
4Simple distillation. ...
Fractional distillation.
Answer:
Flux is 21 Nm^2/C.
Explanation:
Electric field, E = 6 N/C along X axis
Electric filed vector, E = 6 i N/C
Area, A = 4 square meter
Area vector
![\overrightarrow{A} = 4 (cos30 \widehat{i} + sin 30 \widehat{j})\\\\\overrightarrow{A} = 3.5 \widehat{i} + 2 \widehat{j}\\](https://tex.z-dn.net/?f=%5Coverrightarrow%7BA%7D%20%3D%204%20%28cos30%20%5Cwidehat%7Bi%7D%20%2B%20sin%2030%20%5Cwidehat%7Bj%7D%29%5C%5C%5C%5C%5Coverrightarrow%7BA%7D%20%3D%203.5%20%5Cwidehat%7Bi%7D%20%2B%202%20%5Cwidehat%7Bj%7D%5C%5C)
The flux is given by
![\phi= \overrightarrow{E}.\overrightarrow{A}\\\\\phi = 6 \widehat{i} . \left (3.5 \widehat{i} + 2 \widehat{j} \right )\\\\\phi = 21 Nm^2/C](https://tex.z-dn.net/?f=%5Cphi%3D%20%5Coverrightarrow%7BE%7D.%5Coverrightarrow%7BA%7D%5C%5C%5C%5C%5Cphi%20%3D%206%20%5Cwidehat%7Bi%7D%20.%20%20%5Cleft%20%283.5%20%5Cwidehat%7Bi%7D%20%2B%202%20%5Cwidehat%7Bj%7D%20%20%5Cright%20%29%5C%5C%5C%5C%5Cphi%20%3D%2021%20Nm%5E2%2FC)
Answer:
<em>a. The rock takes 2.02 seconds to hit the ground</em>
<em>b. The rock lands at 20,2 m from the base of the cliff</em>
Explanation:
Horizontal motion occurs when an object is thrown horizontally with an initial speed v from a height h above the ground. When it happens, the object moves through a curved path determined by gravity until it hits the ground.
The time taken by the object to hit the ground is calculated by:
![\displaystyle t=\sqrt{\frac{2h}{g}}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20t%3D%5Csqrt%7B%5Cfrac%7B2h%7D%7Bg%7D%7D)
The range is defined as the maximum horizontal distance traveled by the object and it can be calculated as follows:
![\displaystyle d=v.t](https://tex.z-dn.net/?f=%5Cdisplaystyle%20d%3Dv.t)
The man is standing on the edge of the h=20 m cliff and throws a rock with a horizontal speed of v=10 m/s.
a,
The time taken by the rock to reach the ground is:
![\displaystyle t=\sqrt{\frac{2*20}{9.8}}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20t%3D%5Csqrt%7B%5Cfrac%7B2%2A20%7D%7B9.8%7D%7D)
![\displaystyle t=\sqrt{4.0816}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20t%3D%5Csqrt%7B4.0816%7D)
t = 2.02 s
The rock takes 2.02 seconds to hit the ground
b.
The range is calculated now:
![\displaystyle d=10\cdot 2.02](https://tex.z-dn.net/?f=%5Cdisplaystyle%20d%3D10%5Ccdot%202.02)
d = 20.2 m
The rock lands at 20,2 m from the base of the cliff