The answer is D. A universal motor uses brushes made out of carbon. The softness of the carbon allows easy direct radial contact with the communicator without any damage. It also allows easy reversal of rotor direction. A carbon brush has a flexible copper jumper lead attached.
Answer:
C. Experimental research
Explanation:
Experimental research design (ERD)- It is a study that strictly stick to scientific research design. This comprises variables that can be calculated, compared and measured, a hypothesis and a variable to be manipulated by the experimenter. An experimental research design is completed only in a controlled environment.
There are three types of ERD:
1. Quasi-experimental design.
2. Pre-experimental design.
3. True experimental design.
Experimental research design is quantitative in nature.
The correct answer is D. The name <em>Carl Rogers</em> should be changed in this sentence because the founder of the psychoanalysis was the Austrian neurologist Sigmund Freud. He believed that our personality was greatly influenced by events that happened in our childhood. The theory that explains the human behavior and the method for treatment of mental illness are called psychoanalysis.
Remove the barriers of trading between the three countries
