Answer:
D) selective
Explanation:
The selective placement in the adoption studies refers to practice by which the adoption agencies tend to match some definite characteristics of the adopted child's adopted parents than that of child's biological parents.
It results in the correlation of the environments between the biological relatives raised in two different homes.
<u>For example, when the child is placed in a home which is similar to the home of the biological parents.</u>
Answer:
The mass of the ball is 5866 g.
Explanation:
Given that,
Impulse = 1.5 N.s
Velocity to the west = 3.8 m/s
Velocity to the east = 4.9 m/s = -4.9 in to the west
We need to calculate the mass of the ball
Using formula of impulse
![I = p_{i}-P_{f}](https://tex.z-dn.net/?f=I%20%3D%20p_%7Bi%7D-P_%7Bf%7D)
![I=m(v_{i}-v_{f})](https://tex.z-dn.net/?f=I%3Dm%28v_%7Bi%7D-v_%7Bf%7D%29)
![m=\dfrac{v_{i}-v_{f}}{I}](https://tex.z-dn.net/?f=m%3D%5Cdfrac%7Bv_%7Bi%7D-v_%7Bf%7D%7D%7BI%7D)
Where,
= initial velocity
=final velocity
m = mass of ball
Put the value into the formula
![m=\dfrac{3.9-(-4.9)}{1.5}](https://tex.z-dn.net/?f=m%3D%5Cdfrac%7B3.9-%28-4.9%29%7D%7B1.5%7D)
![m=5.866\ kg](https://tex.z-dn.net/?f=m%3D5.866%5C%20kg)
![m = 5866\ g](https://tex.z-dn.net/?f=m%20%3D%205866%5C%20g)
Hence, The mass of the ball is 5866 g.
Work has not been done as there is no distance moved. Work done is equal to force*distance
The product is sodium chloride. In its clean, pulverized form, that's common table salt.