Answer:
B. Speed = Wavelength x Frequency.Explanation:
Answer:
If a piece of iron is brought near a permanent magnet, the electrons within the atoms in the iron orient their spins to match the magnetic field force produced by the permanent magnet, and the iron becomes “magnetized.”
Explanation:
i dont know how to add align and domain
This is true. Gravity is constantly pulling on anything and everything (even light!), no matter how far away it is from another object.
Complete question
The complete question is shown on the first uploaded image
Answer:
The velocity is ![v = c* \sqrt{1 - \frac{1}{n^2} }](https://tex.z-dn.net/?f=v%20%3D%20c%2A%20%5Csqrt%7B1%20-%20%20%5Cfrac%7B1%7D%7Bn%5E2%7D%20%7D)
Explanation:
From the question we are told that
a = nb
The length of the minor axis of the symbol of the Federation, a circle, seen by the observer at velocity v must be equal to the minor axis(b) of the Empire's symbol, (an ellipse)
Now this length seen by the observer can be mathematically represented as
![h = t \sqrt{1 - \frac{v^2}{c^2} }](https://tex.z-dn.net/?f=h%20%3D%20t%20%5Csqrt%7B1%20-%20%5Cfrac%7Bv%5E2%7D%7Bc%5E2%7D%20%7D)
Here t is the actual length of the major axis of of the Empire's symbol, (an ellipse)
So t = a = nb
and b is the length of the minor axis of the symbol of the Federation, (a circle) when seen by an observer at velocity v which from the question must be the length of the minor axis of the of the Empire's symbol, (an ellipse)
i.e h = b
So
![[\frac{1}{n} ]^2 = 1 - \frac{v^2}{c^2}](https://tex.z-dn.net/?f=%5B%5Cfrac%7B1%7D%7Bn%7D%20%5D%5E2%20%3D%20%201%20-%20%20%5Cfrac%7Bv%5E2%7D%7Bc%5E2%7D)
![v^2 =c^2 [1- \frac{1}{n^2} ]](https://tex.z-dn.net/?f=v%5E2%20%3Dc%5E2%20%5B1-%20%5Cfrac%7B1%7D%7Bn%5E2%7D%20%5D)
![v^2 =c^2 [\frac{n^2 -1}{n^2} ]](https://tex.z-dn.net/?f=v%5E2%20%3Dc%5E2%20%5B%5Cfrac%7Bn%5E2%20-1%7D%7Bn%5E2%7D%20%5D)
![v = c* \sqrt{1 - \frac{1}{n^2} }](https://tex.z-dn.net/?f=v%20%3D%20c%2A%20%5Csqrt%7B1%20-%20%20%5Cfrac%7B1%7D%7Bn%5E2%7D%20%7D)
<span>2π/T = 2π/10 = π/5
y(x) = A sin (wx) = 0.75 sin (πx/5)
y(4) = 0.75 sin (4π/5) = 0.4408389392... ≈ 0.441</span><span>
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