Answer:
Fluid friction.
Explanation:
Friction can be defined as a force that resists the relative motion of two objects when there surface comes in contact. Thus, it prevents two surface from easily sliding over or slipping across one another. Also, friction usually reduces the efficiency and mechanical advantage of machines but can be reduced through lubrication.
Generally, there are four (4) main types of friction and these includes;
I. Static friction.
II. Rolling friction.
III. Sliding friction.
IV. Fluid friction.
Fluid friction can be defined as a type of friction that acts on objects moving through a liquid or gas. A fluid refers to any physical substance that can flow and is able to take the shape of a container.
Explanation:
effects of extreme repeated behaviour which would be unethical in real life
like the effects of extreme running, eating, medicines
Answer:
Out of the available options, I would say option A.
Answer:
b) subjects agree to participate in a study after receiving complete information about the nature and purpose of the study.
Explanation:
In research, the term informed consent refers to the process in which researchers get a voluntary agreement from participants of the study where they state they are willing to participate on it.
This consent involves informing the subjects about their rights, the procedures they will undergone to, the purpose of the study and the risks and benefits they might have. However, in this consent the researchers <u>do not disclose the hypothesis of the study because this might put in risk the results of the study </u>(since participants might change their behavior due to this).
Therefore, the correct answer is that informed consent means that b) subjects agree to participate in a study after receiving complete information about the nature and purpose of the study.
