Increasing temperature increases solubility so that 480 grams (g) of sugar makes a saturated solution in 100 milliliters (mL) of
2 answers:
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Answer:
The correct answer is c.) the force of the stone's gravity pulling up on Earth.
Explanation:
The correct answer is c.) the force of the stone's gravity pulling up on Earth.
The Earth's size is much greater than size of the stone.
From Newton's Third Law that the force with the Earth attracts the stone is the same as the force of gravitational attraction that the stone exerts on Earth.
Let be the mass of Earth and
be the mass of the stone.
Therefore F = =
where it is known that
which implies that
.
The acceleration of the stone towards the Earth is much greater than the acceleration of the Earth towards the stone, and so the stone falling towards the Earth is actually visible and perceptible.
Answer:
b) Vectors A and B are in the same direction.
Explanation:
To understand this problem we will say that vector A has a magnitude of 5 units and vector B a magnitude of 3 units. In the subtraction of vectors the initial parts of vectors always bind together. And the vector resulting from the subtraction is traced from the end of the second vector (B) to the end of the first vector (A).
The length of the resultant vector will be 5 - 3 = 2
In the attached image, we analyze case a), b), and d)
For a)
As we can see in the attached image the resultant vector has a length of 8 units.
For d)
As we can see in the attached image the resultant vector has a length of 5.83 units.
For b)
The resultant vector has a length of 2 units.
Therefore the case given in b) is true
