The force F between two charges Q1 and Q2 in a vacuum is proportional to the product of the charges and is inversely proportiona
1 answer:
Answer:
<h3>The given statement "The force F between two chargesStep-by-step explanation:
Given that "The force F between two charges and
in a vacuum is proportional to the product of the charges and is inversely proportional to the square of the distance between two charges"
Coulomb's law states that the magnitude of the electrostatic force F of attraction or repulsion between the two point charges and
is directly proportional to the product of the magnitudes of charges
and
and it is inversely proportional to the square of the distance between the two charges.
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Answer:
A sample of is needed, in which E is the desired margin of error, as a proportion. If we find a decimal value, we round up to the next whole number.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
The margin of error is of:
In a previous study of 1012 randomly chosen respondents, 374 said that there should be such a law.
This means that
95% confidence level
So , z is the value of Z that has a pvalue of
, so
.
How large a sample size is needed to be 95% confident with a margin of error of E?
A sample size of n is needed, and n is found when M = E.
A sample of is needed, in which E is the desired margin of error, as a proportion. If we find a decimal value, we round up to the next whole number.