Answer:
a) the light is close to normal therefore the reference incidence of medium 1 is less than medium n2 where the ray is transmitted.
b) The ray is far from normal in this case the refractive index of medium 1 is greater than index of medium 2
Explanation:
The expression for the angle of refraction is
n₁ sin θ₁ = n₂ sin θ₂
refractive index n₁ is for incident light and n₂ is for transmitted light.
We have two cases
a) the light is close to normal therefore the reference incidence of medium 1 is less than medium n2 where the ray is transmitted.
b) The ray is far from normal in this case the refractive index of medium 1 is greater than index of medium 2
Answer:
The mass of the asteroids is 0.000334896182184 times the mass of the Earth.
39929.4542466 m
Explanation:
Total mass of the asteroids
![m_a20000\times 10^{17}=2\times 10^{21}\ kg](https://tex.z-dn.net/?f=m_a20000%5Ctimes%2010%5E%7B17%7D%3D2%5Ctimes%2010%5E%7B21%7D%5C%20kg)
= Mass of Earth = ![5.972\times 10^{24}\ kg](https://tex.z-dn.net/?f=5.972%5Ctimes%2010%5E%7B24%7D%5C%20kg)
The ratio is
![\dfrac{m_a}{m_e}=\dfrac{2\times 10^{21}}{5.972\times 10^{24}}\\\Rightarrow \dfrac{m_a}{m_e}=0.000334896182184](https://tex.z-dn.net/?f=%5Cdfrac%7Bm_a%7D%7Bm_e%7D%3D%5Cdfrac%7B2%5Ctimes%2010%5E%7B21%7D%7D%7B5.972%5Ctimes%2010%5E%7B24%7D%7D%5C%5C%5CRightarrow%20%5Cdfrac%7Bm_a%7D%7Bm_e%7D%3D0.000334896182184)
The mass of the asteroids is 0.000334896182184 times the mass of the Earth.
Volume is given by
![V=\dfrac{m}{\rho}\\\Rightarrow \dfrac{4\pi}{3\times 8} d^3=\dfrac{m}{\rho}\\\Rightarrow d^3=\dfrac{3\times 8}{4\pi}\dfrac{m}{\rho}\\\Rightarrow d=(\dfrac{3\times 8}{4\pi}\dfrac{m}{\rho})^{\dfrac{1}{3}}\\\Rightarrow d=(\dfrac{3\times 8}{4\pi}\dfrac{10^{17}}{3000})^{\dfrac{1}{3}}\\\Rightarrow d=39929.4542466\ m](https://tex.z-dn.net/?f=V%3D%5Cdfrac%7Bm%7D%7B%5Crho%7D%5C%5C%5CRightarrow%20%5Cdfrac%7B4%5Cpi%7D%7B3%5Ctimes%208%7D%20d%5E3%3D%5Cdfrac%7Bm%7D%7B%5Crho%7D%5C%5C%5CRightarrow%20d%5E3%3D%5Cdfrac%7B3%5Ctimes%208%7D%7B4%5Cpi%7D%5Cdfrac%7Bm%7D%7B%5Crho%7D%5C%5C%5CRightarrow%20d%3D%28%5Cdfrac%7B3%5Ctimes%208%7D%7B4%5Cpi%7D%5Cdfrac%7Bm%7D%7B%5Crho%7D%29%5E%7B%5Cdfrac%7B1%7D%7B3%7D%7D%5C%5C%5CRightarrow%20d%3D%28%5Cdfrac%7B3%5Ctimes%208%7D%7B4%5Cpi%7D%5Cdfrac%7B10%5E%7B17%7D%7D%7B3000%7D%29%5E%7B%5Cdfrac%7B1%7D%7B3%7D%7D%5C%5C%5CRightarrow%20d%3D39929.4542466%5C%20m)
The diameter is 39929.4542466 m
<em>The net force required to give a 25kg crate an acceleration of 2.2m/s^2 to the right is;</em>
25 x 2.2
= 55 N
Answer:
destroy
Explanation:
cuz if anyhow throw rubbish, it will affect/destroy the world environment