Answer:
Explanation:
Coordinate system is one that describe the location of an object in a given plane. It implies the use of axes (coordinates) and points.
Given that the man in the question walks 400 m due north of east. The cardinal points can be used in this case, with the north and east cardinals as the required axis.
scale = 
= 
= 
scale = 1:40
This is a reduced scale which implies that 1 cm on the drawing is equal to 40 m on the original length.
The man's direction is 
north of east.
The graphical drawing of the vector is herewith attached to this answer.
<h2>
Answer:</h2>
Alpha
<em>I hope this helps you</em>
<em>:)</em>
Answer:
Explanation:
Apparent frequency that is received to the speeder is given as
here we know that
now we have
now the frequency that is received back from the speeder is given as
So difference is the frequency is given as
<span>If your speed change from 10 km/h to 6 km/h,you have a negative acceleration</span>
Answer:
When the familiar red spectral line of the hydrogen spectrum is examined at very high resolution, it is found to be a closely-spaced doublet. This splitting is called fine structure and was one of the first experimental evidences for electron spin.
Explanation:
