Two vectors are shown. Which statement best compares the vectors?
2 answers:
Answer:
Vectors Y has greater magnitude than vector X
Explanation:
The attached figure shows two vectors. A vector have both magnitude and direction.
The length of vector X is less than vector Y. They both are pointing in opposite directions.
The magnitude of a vector is given by :
a = xi +yj
From the figure, it is clear that the vector Y has greater magnitude than vector X. Hence, the correct option is (B).
You might be interested in
Answer:
The surface gravity g of the planet is 1/4 of the surface gravity on earth.
Explanation:
Surface gravity is given by the following formula:
So the gravity of both the earth and the planet is written in terms of their own radius, so we get:
The problem tells us the radius of the planet is twice that of the radius on earth, so:
If we substituted that into the gravity of the planet equation we would end up with the following formula:
Which yields:
So we can now compare the two gravities:
When simplifying the ratio we end up with:
So the gravity acceleration on the surface of the planet is 1/4 of that on the surface of Earth.