Answer:
See the answers below.
Explanation:
The magnitude can be easily found by means of the Pythagorean theorem.
We know that the coordinates in x and in y are negative, therefore the vector should be located in the fourth quadrant, see attached image.
And the angle with respect to the horizontal can be determined by means of the tangent of the angle.
These are 40 degrees below the X-positive horizontal axis.
The answer to the first question is C isotonic environment. To help me learn this I memorized that isotonic is equal hypotonic is over hydrated while hypertonic is dehydrated. And for the second question is they move from high to low so C
Answer:
this effect is called SCREENING
Explanation:
When a positive charge is surrounded by several negative charges at a long distance, an apparent decrease in the positive charge is observed, this effect is called SCREENING and is noticeable in multielectronic atoms
This effect is responsible for the decrease in ionization energy in the larger atoms.