Recall the wave equation,
![c=f\lambda](https://tex.z-dn.net/?f=c%3Df%5Clambda)
where c is the speed of the wave (m/s), f is the frequency of the wave (Hz) and λ is the wavelength of the wave (m).
![c=f\lambda \Rightarrow \lambda = \frac{c}{f}](https://tex.z-dn.net/?f=c%3Df%5Clambda%20%5CRightarrow%20%5Clambda%20%3D%20%20%5Cfrac%7Bc%7D%7Bf%7D%20)
so
Answer:
See the explanation below.
Explanation:
A lever is a simple machine that changes the magnitude and direction of the force applied to move an object. Minimizes the force needed to lift the object.
By means of the following image, we can see the principle of operation of a lever.
The load can be moved thanks to the force multiplied by the distance to the fulcrum.
Answer: True
Explanation: When light is reflected off lets say a mirror it is bent and changes direction to bounce off of another wall or object. For example if you take a flash light and shine it into a mirror the light reflects into a different direction your welcome
Answer:
The maximum potential difference is 186.02 x 10¹⁵ V
Explanation:
formula for calculating maximum potential difference
![V = \frac{2K_e \lambda}{k}ln(\frac{b}{a})](https://tex.z-dn.net/?f=V%20%3D%20%5Cfrac%7B2K_e%20%5Clambda%7D%7Bk%7Dln%28%5Cfrac%7Bb%7D%7Ba%7D%29)
where;
Ke is coulomb's constant = 8.99 x 10⁹ Nm²/c²
k is the dielectric constant = 2.3
b is the outer radius of the conductor = 3 mm
a is the inner radius of the conductor = 0.8 mm
λ is the linear charge density = 18 x 10⁶ V/m
Substitute in these values in the above equation;
![V = \frac{2K_e \lambda}{k}ln(\frac{b}{a}) = \frac{2*8.99*10^9*18*10^6 }{2.3}ln(\frac{3}{0.8}) =140.71 *10^{15} *1.322 \\\\V= 186.02 *10^{15} \ V](https://tex.z-dn.net/?f=V%20%3D%20%5Cfrac%7B2K_e%20%5Clambda%7D%7Bk%7Dln%28%5Cfrac%7Bb%7D%7Ba%7D%29%20%3D%20%20%5Cfrac%7B2%2A8.99%2A10%5E9%2A18%2A10%5E6%20%7D%7B2.3%7Dln%28%5Cfrac%7B3%7D%7B0.8%7D%29%20%3D140.71%20%2A10%5E%7B15%7D%20%2A1.322%20%5C%5C%5C%5CV%3D%20186.02%20%2A10%5E%7B15%7D%20%5C%20V)
Therefore, the maximum potential difference this cable can withstand is 186.02 x 10¹⁵ V