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Andreas93 [3]
2 years ago
5

Which of the following statements outputs the value of the gpa member of element 1 of the student array?

Computers and Technology
1 answer:
ANTONII [103]2 years ago
3 0

Answer:

The correct answer for the given question is option(c) i.e

cout << student[1].gpa;

Explanation:

In the given question gpa is the member of array student which index or element value is 1.

To access that member of array student we using the following syntax i.e

arrayname[index no or element no].variable name

In the option(A) the square bracket is not mention that's why it is incorrect option.

In the option(B) the array name is wrong i.e  firstStudent  that's why it is incorrect option.

In the option(D) the square bracket is not mention as well as -> operator is used to access member of array that's why it is incorrect option.

So student[1].gpa; is the correct statement which option is A cout << student1.gpa;.

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c++ You are given an array A representing heights of students. All the students are asked to stand in rows. The students arrive
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The below code will help you to solve the given problem and you can execute and cross verify with sample input and output.

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2 years ago
Modify the sentence-generator program of Case Study so that it inputs its vocabulary from a set of text files at startup. The fi
Snezhnost [94]

Answer:

Go to explaination for the program code.

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Before running the program you need to have these files created like below in your unix box.

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Unix Terminal> cat prepositions.txt

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Code:

#!/usr/local/bin/python3

import random

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for each_line in fp:

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articles = getWords('articles.txt')

nouns = getWords('nouns.txt')

verbs = getWords('verbs.txt')

prepositions = getWords('prepositions.txt')

def sentence():

return nounPhrase() + " " + verbPhrase()

def nounPhrase():

return random.choice(articles) + " " + random.choice(nouns)

def verbPhrase():

return random.choice(verbs) + " " + nounPhrase() + " " + prepositionalPhrase()

def prepositionalPhrase():

return random.choice(prepositions) + " " + nounPhrase()

def main():

number = int(input('Enter number of sentences: '))

for count in range(number):

print(sentence())

if __name__=='__main__':

main()

kindly check attachment for code output and onscreen code.

6 0
2 years ago
What is the distance rn between the point of application of n⃗ and the axis of rotation? what is the distance rw between the poi
Mandarinka [93]

Complete Question.

A. Suppose that you are holding a pencil balanced on its point. If you release the pencil and it begins to fall, what will be the angular acceleration when it has an angle of 10.0 degrees from the vertical?

B. What is the distance rn between the point of application of n⃗ and the axis of rotation?

C. What is the distance rw between the point of application of w⃗ and the axis? enter your answers in meters separated by a comma?

Answer:

A. â = - 17rad/s²

B. rn = 0, meters

C. rw = 0.074, meters

Explanation:

Where;

l = length of the pencil

θ = angle between the vertical line and the pencil

â = angular acceleration.

The torque due to weight about the pivotal point is negative since it's clockwise;

t = - mg(l/2)sinØ ..... equation 1

torque with respect to angular acceleration;

t = Iâ ..... equation 2

The moment of Inertia of the pencil about one end;

I = (ml²)/3

Substituting I into equation 2;

t = [(ml²)/3]×â

Equating the equation, we have;

[(ml²)/3]×â = - mg(l/2)sinØ

â = (-3gsinØ)/2l

â = (-3*9.8*sin10°)/(2*0.15)

Angular acceleration, â = -17rad/s²

B. The normal force is acting at the normal force only, so the distance r n between the point of application of n ⃗ and the axis of rotation is zero because the axis of pencil is passing the same point of application w.

C. rn = (lcosØ)/2

rn = (0.15 * cos10°)/2

rn = (0.15 * 0.9848)/2

rn = (0.1477)/2

rn = 0.074m.

Since the gravity acts at exactly half of the length of pencil, distance r w between the point of application of w⃗ and the axis equals 0.074m.

8 0
2 years ago
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