Violet light is at the end of the visible light section of the electromagnetic spectrum. Ultraviolet rays are directly next to violet rays on the EM Spectrum.
Answer:
The boat will be 74 .17 meters downstream by the time it reaches the shore.
Explanation:
Consider the vector diagrams for velocity and distance shown below.
converting 72 miles per hour to km/hr
we have 72 miles per hour 72 × 1.60934 = 115.83 km/hr
The velocity vectors form a right angled triangle, and can be solved using simple trigonometric laws
![tan \theta = \frac{12}{115.873}](https://tex.z-dn.net/?f=tan%20%5Ctheta%20%3D%20%5Cfrac%7B12%7D%7B115.873%7D)
![\theta = tan^{-1}( \frac{12}{115.873})=5.9126](https://tex.z-dn.net/?f=%5Ctheta%20%3D%20tan%5E%7B-1%7D%28%20%20%5Cfrac%7B12%7D%7B115.873%7D%29%3D5.9126)
This is the vector angle with which the ship drifts away with respect to its northward direction.
<em>From the sketch of the displacement vectors, we can use trigonometric ratios to determine the distance the boat moves downstream.</em>
Let x be the distance the boat moves downstream.d
![sin(5.9126)=\frac{x}{720}](https://tex.z-dn.net/?f=sin%285.9126%29%3D%5Cfrac%7Bx%7D%7B720%7D)
![x= 720\times 5.9126](https://tex.z-dn.net/?f=x%3D%20720%5Ctimes%205.9126)
![x=74.17m](https://tex.z-dn.net/?f=x%3D74.17m)
∴The boat will be 74 .17 meters downstream by the time it reaches the shore.
Explanation:
Below is an attachment containing the solution.