The technique to improve internal validity is D) Addition of a control group.
<h3>What is
internal validity?</h3>
Internal validity serves as the study which bring about the establishment of a trustworthy cause-and-effect relationship that can be found in treatment and an outcome.
it should be noted that Internal validity also helps to eliminate alternative explanations , hence, The technique to improve internal validity is D) Addition of a control group.
Learn more about internal validity on:
brainly.com/question/968894
#SPJ1
COMPLETE QUESTOIN:
Which of the following is a technique to improve internal validity ____________?
A) Experimenter expectancy
B) Participant bias
C) Use of a confederate
D) Addition of a control group
Immediately after digestion in the small intestine most dietary fats are absorbed into the bile.
<h3>What is the bile?</h3>
This is the part that is secreted by the liver that is able to perform these functions
- Carrying waste
- Breaking down of fats during digestion.
The bile is where the emulsification of the fats happen after they have been absorbed.
Read more on the bile here: brainly.com/question/1497876
The ball’s speed and direction at the lowest point of trajectory are; 3.1 m/s and swing to the same angle on the other side
<h3>What is the speed at the lowest point?</h3>
We will assume that all of the motion will transfer to Kinetic Energy at the lowest point. Now, the difference in height will be;
Δh = (130 – 130*cos °5) = 0.49 cm
The change in PE is;
ΔP.E = mgΔh
ΔP.E = 9.8m/s² × 0.75kg × 0.049 m
ΔP.E = 0.36015 J
Formula for kinetic energy is;
K.E = ¹/₂*m*v²
From conservation of energy;
K.E = P.E
Thus;
¹/₂* 0.075 * v² = 0.36015
v = √[(0.36015 * 2)/0.075]
v = 3.1 m/s
Thus, the pendulum will swing to the same angle on the other side.
Read more about Speed of Pendulum at; brainly.com/question/17054952
I think A is the correct answer
Ionic bonds basically occur between metals, losing electrons, and nonmetals, gaining electrons. Ions which have opposite charges will attract one another creating an ionic bond.
Given that there is formation of ionic bonds and elctrons act within the bond.
We are required to tell the name of the elements act within the bond and how ionic bonds occur.
Ionic bond is basically type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound.
Ionic bonds basically occur between metals, losing electrons, and nonmetals, gaining electrons. Ions which have opposite charges will attract one another creating an ionic bond.
Hence ionic bonds basically occur between metals, losing electrons, and nonmetals, gaining electrons. Ions which have opposite charges will attract one another creating an ionic bond.
Learn more about electrons at brainly.com/question/26084288
#SPJ4
