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What is a reflexive property in geometry?
A reflexive property in geometry is a symmetry of shapes and space. The concept of a reflexive property dates back to the classical era, when it was proposed by Eratosthenes in 1894 BC. Reflexivity was studied largely as an attribute of quadrangles, but more recently has been expanded to include allRead more
A reflexive property in geometry is a symmetry of shapes and space.
The concept of a reflexive property dates back to the classical era, when it was proposed by Eratosthenes in 1894 BC. Reflexivity was studied largely as an attribute of quadrangles, but more recently has been expanded to include all geometric figures (e.g., triangles or quadrilaterals). By definition, all angles on each side are equal and the number of sides is odd for a quadrangle ; this criterion can be generalized for all other polygonal shapes and space. The vertices must be symmetric about one axis which divides the shape into two halves; one with vertices numbered 1-4 and the other with vertices 5-8. The symmetry arises by reversing the numbering of one side to get the opposite side, which can be done in one of two ways.
See lessWhat is Vrms voltage?
Voltage is electrical potential, so Vrms stands for "root mean square" voltage. It's a way of measuring how much the voltage changes with time over some interval. Voltage is typically measured as volts (or millivolts or kilovolts) from a given reference point to ground. Vrms stands for 'square rootRead more
Voltage is electrical potential, so Vrms stands for “root mean square” voltage. It’s a way of measuring how much the voltage changes with time over some interval. Voltage is typically measured as volts (or millivolts or kilovolts) from a given reference point to ground.
Vrms stands for ‘square root of the average value of a signal, taken over an interval’ and it can be calculated by using this formula:
RootmeanSquare(1/time).
For example, if you want to measure the degree of variation in 1000 ms intervals (0.001 seconds), then 1/1000×60 = 0.0000666…
See lessWhat is a response variable in statistics?
A response variable is a value in the dependent variable side of an equation. If you hear about how "a high level of X causes decreased Y" but don't know what the variables are, ask for them to clarify and see if it's a linear or exponential relationship (if they respond). They may give informationRead more
A response variable is a value in the dependent variable side of an equation.
If you hear about how “a high level of X causes decreased Y” but don’t know what the variables are, ask for them to clarify and see if it’s a linear or exponential relationship (if they respond). They may give information about slope and intercept which will help figure out what the equation is.
See lessPractically, if somebody says something like “I’m 20 pounds overweight because my parents were always on food stamps,” this would be a conclusion statement rather than a hypothesis so there would be no independent or dependent variables–just their observation.
What is the meaning of degenerate orbitals?
A degenerate orbital comes about when there are two or more electrons that have the same spin and in the same energy level. The result is that they combine so they can occupy an electron orbital, taking turns occupying different orbitals. The term 'degenerate orbitals' refers to the fact that 2 elecRead more
A degenerate orbital comes about when there are two or more electrons that have the same spin and in the same energy level. The result is that they combine so they can occupy an electron orbital, taking turns occupying different orbitals.
The term ‘degenerate orbitals’ refers to the fact that 2 electrons of opposite spin share a single space. They do this by rotating each other around so as to line up at 180 degrees from one another — if they were spinning on their axes like tops–with one going clockwise and one going counter-clockwise. The result is an electron wave which has only tiny differences in phase, meaning it’s really remarkable how much energy differential there is for these 2 particles. It’s like 3 people rotating around each other in such a way as to share one chair.
So degenerate orbitals are not organic, as such, but they do make for transient bonds, like those found in diatomic gasses. This is because it takes very little energy to separate the 2 electrons. As a result they are found in atoms, sharing an orbital between them, which is why there are gasses that have no smell. In fact, the electron pair which forms a chemical bond is usually one of these degenerate pairs.
See lessHow to determine the Lewis dot structure of O2?
In the Lewis structure for oxygen, there is an octet of electrons in the valence shell. In order to come up with the correct Lewis dot diagram one must take a look at how many atoms are in each row and electron configuration. Though this rule may not seem necessary for smaller molecules with lower aRead more
In the Lewis structure for oxygen, there is an octet of electrons in the valence shell. In order to come up with the correct Lewis dot diagram one must take a look at how many atoms are in each row and electron configuration. Though this rule may not seem necessary for smaller molecules with lower atom arrangements, it is important because when we get into more complicated larger structures that contain different numbers of atoms per row or no rows at all then it becomes much less obvious what should be done without looking specifically at exactly what is being asked to fill out.
See lessWhat are angular momentum units?
The angular momentum of a body is its rotational velocity, at any given point in time, multiplied by its moment of inertia. Moment of inertia (I) is the measure of a body's resistance to changes in rotation or tumbling motion about an axis from its position. Moment of inertia depends on the distribuRead more
The angular momentum of a body is its rotational velocity, at any given point in time, multiplied by its moment of inertia.
Moment of inertia (I) is the measure of a body’s resistance to changes in rotation or tumbling motion about an axis from its position. Moment of inertia depends on the distribution of mass about that axis.
It can be thought as how much effort would be needed to change it or stop it from rotating if external forces are not applied to it either way; so for example a spinning top has greater moment compared with an ice skater doing a spin because both have the same linear speed but one’s distance depends on using up kinetic energy and slowing down from friction while the other one stays in the same radius and doesn’t lose speed.
I = (r * m * g) / (2 * r)
where,
r is radius of curvy body;
m is mass; and
g is gravity.
See lessWhat does parameter of interest mean in statistics?
The parameter of interest is the one statistic about a random event that the researcher wants to know more about. For example, if you're studying what time of day people are most likely to go on Facebook, then "time" would be the parameter of interest. For another study, it might be geographic locatRead more
The parameter of interest is the one statistic about a random event that the researcher wants to know more about.
For example, if you’re studying what time of day people are most likely to go on Facebook, then “time” would be the parameter of interest. For another study, it might be geographic location or number of friends–meaning if I knew those values for each individual and was interested in looking at how they related to some other variable (like height) I could determine whether there’s a correlation between these two variables.
See lessWhat is a codon chart?
A codon chart, also known as a base pairing table, is a tabular representation of the genetic code that shows which three nucleotides in DNA represent a specific amino acid. The diagram on the left is an example of this type of diagram. Codon charts were originally drawn one letter to one amino acidRead more
A codon chart, also known as a base pairing table, is a tabular representation of the genetic code that shows which three nucleotides in DNA represent a specific amino acid. The diagram on the left is an example of this type of diagram. Codon charts were originally drawn one letter to one amino acid; there are now six possible combinations for each three-letter codon sequence. The key on the lefthand side displays all 64 possible patterns that the four letters can take in a four-square matrix: A-, T-, C-, G-.
See lessThe following is an example:
Either GCG or GGC give rise to serine, and either CAT or ATC gives rise to proline.
What are some logarithm properties?
'- Logarithms are the inverses of exponential functions. - The logarithm is also called a common logarithm because it is used in many everyday situations, such as calculating mortgage interest and biological growth rates. - Logarithms come up in mathematics, physics, chemistry, astronomy, engineerinRead more
‘- Logarithms are the inverses of exponential functions.
– The logarithm is also called a common logarithm because it is used in many everyday situations, such as calculating mortgage interest and biological growth rates.
– Logarithms come up in mathematics, physics, chemistry, astronomy, engineering and other branches of science related to these subjects because they divide difficult computations by easy calculations
See lessWhat’s the difference between disk method, washer method and shell method in calculus?
Disk Method is the most accurate method and probably the easiest to teach a class, but can be tedious given a long list of numbers. Washer Method is easy to teach kids, quick with large lists, does not require carrying over or regrouping. It's too difficult for small lists of arbitrary numbers. ShelRead more
Disk Method is the most accurate method and probably the easiest to teach a class, but can be tedious given a long list of numbers.
Washer Method is easy to teach kids, quick with large lists, does not require carrying over or regrouping. It’s too difficult for small lists of arbitrary numbers.
Shell Method is tedious for larger lists than about 15-20 numbers and has no meaning when used on arbitrarily generated questions . In addition – it relies on recoding which assumes that there are no changes in units or operations between selections of digits to make an easier/harder calculation.
See less