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A major question is how efficient the chemical–dynamicalevolution of disks is at resetting the chemistry, or whether chemical products inherited from previous stages of star and planet formation survive. The answer is complicated. Crudely, chemical time scales decrease inwards and upwards in disks, ...
During the first term, all first grade students in each school attend a single class. During the second term of the first grade, each school offers two class sections. Sixty of the 121 schools are selected at random. In those schools, students were tracked—assigned to class sections based ...
I had no answer and reacted angrily to what I thought was a nonthesis question. I was embarrassed by my intemperate reaction and felt I had ruined my exam. It seems my committee overlooked this small brouhaha and passed me after all. Looking back after so many years, I still feel it ...
Of the two greatest mathematicians of modern tunes, Newton and Gauss, the former can be considered as a representative of the first, the latter of the second class; neither of them was exclusively so, and Newton’s inventions in the science of pure mathematics were probably equal to Gauss’...
Before an experiment can be performed, it must be planned—the question to nature must be formulated before being posed. Before the result of a measurement can be used, it must be interpreted—nature's answer must be understood properly. These two tasks are those of the theorist, who finds...
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(2014), the explanatory power of such models comes from their universality, which is directly associated with the minimal set of features that allows us to describe the behavior of a system in question (or class of systems—i.e., the universality class they form together). This gives us ...
This study aims to determine the implementation of the question webs based learning model of learning to improve science process skills and scientific questioning skills in grade X students at SMAN 1 Darul Imarah using a quasi-experimental method with nonequivalent control group design. The samples ...
The Descartes-Euler formula is wrong for polyhedra with 7 edges ! In a leap year, how many months have 29 days. [Answer] The first one is mine (2007-07-28). I have not tried it on anybody yet... (2002-12-31) Ignorance is bliss... What's the big deal about mathematical ...