The correct answer is:
Does the measurement include direction?
In fact, the basic difference between a scalar and a vector is that a scalar does not have a direction (it only has a magnitude), while a vector has both magnitude and direction. Therefore, if the answer to this question is "yes", it means the quantity is a vector, otherwise it is a scalar.
Changes in state of matter would be a physical change to whatever it is that you are changing so I think it would be B.Molecules because in order for something to change the molecules have to be moving apart from one another but I maybe wrong depending on what it is your looking at
Answer:
- The magnitude of the resulting force is 67 lbf.
Explanation:
Taking the east as the positive x direction, and the north as the positive y direction.
The first force points west, this is, in the direction of
, so, is


For the second force, knowing the magnitude and directions relative to the x axis, we can find Cartesian representation of the vectors using the formula

where
is the magnitude of the vector and θ the angle with the positive x direction.
So, the second force is


The net force will be :




To obtain the magnitude, we can use the Pythagorean Theorem



And this is the magnitude we are looking for.
Since the light travels in the vacuum then its velocity will be C=3*10^8 m/sec.....then you will convert it to secs=28000*365*24*60*60=8.83008*10^11
then v=s/t then s=v*t=(3*10^8)(8.83008*10^11)=2.649024*10^20 meters