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If light with frequency 5 and times 1014 Hz can remove electrons from a plate of nickel metal light with which of the following frequencies could also be expected to remove electrons from this plate?
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Why you are using h bar in heisenberg uncertainity principle?
Sometimes frequency is not in terms of Hertz (Hz) ,CYCLES PER SECOND, but instead it is expressed as RADIANS PER SECOND, which is angular frequency. Therefore a conversion factor must be used, which is 'h-bar' Recall the following ---------------------------- h-bar = h/(2*pi) where h is Planck's constant angular frequency, ω = 2*pi*ν where ν is frequency in Hertz. ---------------------------- So lets take Planck's relation: Energy (E) = Planck's Constant (h) * frequency( ν ) E = h * ν 1) If the frequency ( ν ) is in Hz, then just looking at the units, Planck's relation becomes E = h * ν = ( J-s ) * (1/s) = J ---> Expected unit for energy: Joule 2) If the frequency ( ν ) is in Radians per second, h must have a conversion factor to accommodate angular frequency. Again, if we look at Planck's relation using angular frequency, ω = 2*pi*ν E = h * ω = ( J-s) * [ (2*pi)/s ] = J * 2*pi ---> Not the expected unit for energy So we must use a reduced Planck constant, h-bar = h/2*pi to obtain Joules E = h * ω = [( J-s)/(2*pi)] * [ (2*pi)/s ) = J ---> Expected unit for energy: Joule
What are the expected results of a paracentesis procedure?
A diagnosis of the cause and/or relief from accumulated fluid pressure are the expected results.
Which of these would be expected to be the least dense apple balloon fish tank?
The balloon
A sentence for recoil?
Example sentence - The rifle has more recoil than I expected.
What is the A Weigting on a sound level meter?
The decibel A filter is widely used. dBA roughly corresponds to the inverse of the40 dB curve at 1 kHz equal-loudness curve for the human hearing.An A curve always provides for "nice" values when low frequency noise signals are included. An A filter of a measured motorcycle noise must show untrue values. You should know that. From a dBA measurement no accurate description of the expected volume is possible.
Which of the following accurately describes the expected frequencies for a chi-square test?
The maximum likelihood estimate under the null hypothesis gives the best estimate for expected frequencies.
How to get expected frequency value in chi square test?
For goodness of fit test using Chisquare test, Expected frequency = Total number of observations * theoretical probability specified or Expected frequency = Total number of observations / Number of categories if theoretical frequencies are not given. For contingency tables (test for independence) Expected frequency = (Row total * Column total) / Grand total for each cell
What would be the heterozygosity of a population with allele frequencies of 0.6 and 0.4 for the two alleles and an inbreeding coefficient F of 0.40?
F = 1-observed frequency(Aa)/expected frequency(Aa)
What do you mean by expected frequencies in chi square test?
Expected frequencies are used in a chi-squared "goodness-of-fit" test. there is a hypothesis that is being tested and, under that hypothesis, the random variable would have a certain distribution. The expected frequency for a "cell" is the number of observations that you would expect to find in that cell if the hypothesis were true.
What do you mean by expected frequencies in chi-square test?
For a chi-square test there is a null hypothesis which describes some distribution for the variable that is being tested. The expected frequency for a particular cell is the number of observations that would be expected in that cell if the null hypothesis were true.
What is under frequency?
When the frequency is less than expected.
When does one do a chi square test?
This is concerned with frequency. Can be used to test whether the observed frequencies in a particular case differ significantly from those which would be expected in the null hypothesis. source: analysis related lectures
How would you determine the expected frequencies for a chi-square goodness of fit test?
You first decide on a null hypothesis. Expected frequencies are calculated on the basis of the null hypothesis, that is, assuming that the null hypothesis is true.
What is the expected number of valence electrons for a group 3 A element?
The expected number of valence electrons for a group 3 A element is 5 number of valence electrons.
What is referred to by the term expected frequencies?
It is the number of observations that might be expected for a particular category if the [null] hypothesis that is being tested is true.
What is the formula for expected frequency?
You need to know the probability of the event in question. Then the expected frequency for that event occurring is that probability times the number of times the experiment was repeated.
Reasons why development is not following expected pattern?
reasons why children development is not following expected patterns
