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MrMuchimi
2 years ago
14

Which of the following statements is not true about electric current in a metal wire?.

SAT
1 answer:
Vesna [10]2 years ago
5 0

Answer: If the options were these :

A)The average current is directly proportional to several factors including the number of mobile electrons per unit volume in the wire

B)The average current is directly proportional to several factors including the average acceleration of the electrons

C)Electrons are slowed due to collisions with metal atoms

D)Choose this answer if all of the statements are true

E)To have a current there must be an electric field inside the conductor

Explanation: The correct answer is B

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In a study of helicopter usage and patient survival, among the 56,074 patients transported by helicopter, 235 of them
xxMikexx [17]

Using the hypergeometric distribution, it is found that the probability is 0.845 = 84.5%.

--------------------

  • The patients are chosen from the sample without replacement, which means that the hypergeometric distribution is used to solve this question.

Hypergeometric distribution:

The probability of x successes is given by:

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}

The parameters are:

  • x is the number of successes.
  • N is the size of the population.
  • n is the size of the sample.
  • k is the total number of desired outcomes.

Combination formula:

is the number of different combinations of x objects from a set of n elements, given as:

C_{n,x} = \frac{n!}{x!(n-x)!}

--------------------

  • 56074 patients, thus N = 56074
  • Sample of 40, thus, n = 40
  • 235 left against medical advice, thus, k = 235.

The probability that none left against medical advice is P(X = 0), so:

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}

P(X = 0) = h(0,56074,40,235) = \frac{C_{235,0}*C_{55839,40}}{C_{56074,40}} = 0.845

The probability is 0.845 = 84.5%.

A similar problem is given at brainly.com/question/24008577

6 0
2 years ago
Which about mama does the author show in this passage from everyday use.
LenKa [72]

People often have different opinions or views. Which about mama that the author show in this passage from everyday use is that Mama is ordinary and Humble.

This passage depicts mama to be a very strong woman, who lives an ordinary life, humble in nature and still what she the advantages of her body shape and type.

She believes that been  big is aa plus to her as this will gives her strength It also helps us to know that she is just as ordinary woman who is capable of completing difficult tasks.

See full question below

Which about Mama does the author show in this passage from "Everyday Use?

" In real life I am a large, big–boned woman with rough, man–working hands. In the winter I wear flannel nightgowns to bed and overalls during the day. I can kill and clean a hog as mercilessly as a man. My fat keeps me hot in zero weather."

Learn more about this passage from

brainly.com/question/5598886

3 0
2 years ago
In the Maya lintel showing Shield Jaguar and Lady Xoc there is a pattern of small, square modules that runs across the top of th
KIM [24]

The above modules are called <u>glyph</u> and they can be interpreted to provide information about the identity of the subjects in an artwork.

<h3>What is a glyph?</h3>

A glyph can be defined as a pattern of small, square modules that are designed and developed by an artist to run across and below an artwork (image).

In this context, we can infer and logically deduce that the aforementioned modules are called <u>glyph</u> and they can be interpreted so as to provide information about the identity of the subjects in an artwork.

In conclusion, it is important to note that a glyph is a pattern of small, square modules that are drawn to run across the top and then down the left side of the Maya lintel, which graphically shows a Shield Jaguar and Lady Xoc.

Read more on glyph here: brainly.com/question/6127740

#SPJ1

4 0
2 years ago
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