Volume = cross sectional area * lengthArea = 2* cross sectional area + perimeter of cross section * length
If the diameter doubles (x2), the cross-sectional area quadruples (x4).
Other things being equal, more cross-sectional area will cause less resistance.
9 AWG
It depends on what you mean by a 30 pipe. Is 30 the cross sectional area - in which case, what is the length of the pipe? Is 30 the length - in which case, what is the cross-sectional area?
Cross-sectional research design allows for data collection at a single point in time, providing a snapshot of a population's characteristics. It is relatively quick and cost-effective compared to longitudinal studies. It can identify correlations between variables and is useful for generating hypotheses for further investigation.
cohort-sequential
The advantage of cross sectional studies is that they are simple, quick, and very affordable to conduct. As a disadvantage, the results of cross sectional studies may be difficult to assess where different participants are used at different levels of an investigation.
The advantage of cross sectional studies is that they are simple, quick, and very affordable to conduct. As a disadvantage, the results of cross sectional studies may be difficult to assess where different participants are used at different levels of an investigation.
Cross sectional
Cross sequential studies combine both longitudinal and cross sectional methods in an attempt to both shorten the length of the research and minimize developmental assumptions
cross-sectional
The advantage of cross sectional studies is that they are simple, quick, and very affordable to conduct. As a disadvantage, the results of cross sectional studies may be difficult to assess where different participants are used at different levels of an investigation.
advantage of cross sectional study?
You cannot create a cross sectional area of a rectangle. You can only create cross sectional areas for triangular shapes.
Cross-sectional research studies a group of individuals at one specific point in time to understand relationships or differences between variables. Longitudinal research, on the other hand, involves studying the same group of individuals over an extended period to track changes and development in variables of interest.
The quickest way to study changes over the life span is through cross-sectional research. Cross-sectional studies (also known as Cross-sectional analysis) form a class of research methods that involve observation of some subset of a population of items all at the same time, in which, groups can be compared at different ages with respect of independent variables, such as IQ and memory ... Source: en.wikipedia.org/wiki/Cross-sectional_research