Answer:
C = 1256.63 miles
Explanation:
This problem is solved by using the following formula for the relation between the arc length of a circle and its radius:
![s=r\theta](https://tex.z-dn.net/?f=s%3Dr%5Ctheta)
s: arc length
r: radius
In this case "s" is 600 miles, and the angle of the arc length is 3°. With this information you can calculate the radius of the planet X:
![r=\frac{s}{\theta}=\frac{600miles}{3\°}}=200\ miles](https://tex.z-dn.net/?f=r%3D%5Cfrac%7Bs%7D%7B%5Ctheta%7D%3D%5Cfrac%7B600miles%7D%7B3%5C%C2%B0%7D%7D%3D200%5C%20miles)
With the value of the radius of the planet you can calculate the circumference, by using the following formula:
![C=2\pi r=2\pi (200\ miles)=1256.63\ miles](https://tex.z-dn.net/?f=C%3D2%5Cpi%20r%3D2%5Cpi%20%28200%5C%20miles%29%3D1256.63%5C%20miles)
Answer:
6538.8 Angstrom
Explanation:
work function, w = 1.9 eV = 1.9 x 1.6 x 10^-19 J = 3.04 x 10^-19 J
Let the longest wavelength is λ.
W = h c / λ
λ = h c / W
λ = (6.626 x 10^-34 x 3 x 10^8) / (3.04 x 10^-19)
λ = 6.5388 x 10^-7 m = 6538.8 Angstrom
Thus, the longest wavelength is 6538.8 Angstrom.
<u>Explanation of the properties of electron spin:</u>
Electron spin:
Electron spin is a quantum characteristic of electrons. It is a mode of angular momentum. The magnitude of this angular momentum is perpetual. If the electron spins clockwise on its axis, it is described as spin-up; counterclockwise is spin-down.
- Electron spin has representative s
- The electron spin quantum number has representative ms.
Electron pair:
Electron pair is also known as lewis pair. Lewis pair consists of two electrons that fill the same molecular orbital but have opposing spins. Gilbert N. Lewis introduced the electron pair idea in a 1916 article.
Answer:
the rate of change in velocity per unit time is called acceleration