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timama [110]
3 years ago
9

The department of transportation is repaving 3 1/3 miles of the interstate. If the workers can repave 2/3 of a mile per day, how

many days are need to complete the repaving?
Mathematics
1 answer:
Crazy boy [7]3 years ago
8 0

Answer:

5 days

Step-by-step explanation:

(3 1/3 miles)/(2/3 miles/day) = (10/3)/(2/3) days = 10/2 days = 5 days

_____

time = distance / speed

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Una caja de 25 newtons se suspende mediante un cable con diámetro de 2cm¿cuál es el esfuerzo aplicado al cable?
Naddik [55]

El cable experimenta un esfuerzo axial de 79577.472 pascales por el peso de la caja.

<h3>¿Cómo calcular el esfuerzo aplicado sobre el cable?</h3>

La caja tiene masa y está sometida a un campo gravitacional, por tanto, tiene un peso (W), en newtons. Por el principio de acción y reacción (tercera ley de Newton), encontramos que el cable es tensionado debido a ese peso y su área transversal experimenta un esfuerzo axial (σ), en pascales.

Asumiendo una distribución uniforme de la fuerza sobre toda la superficie transversal de la cuerda, tenemos que el esfuerzo axial se calcula mediante la siguiente expresión:

σ = W / (π · D² / 4)

Donde:

  • W - Peso de la caja, en newtons.
  • D - Diámetro del área transversal de la caja, en metros.

Si sabemos que W = 25 N y D = 0.02 m, entonces el esfuerzo axial aplicado a la cuerda es:

σ = 25 N / [π · (0.02 m)² / 4]

σ ≈ 79577.472 Pa

<h3>Observación</h3>

La falta de problemas verificados en español sobre esfuerzos axiales obliga a buscar uno equivalente en inglés.

Para aprender más sobre esfuerzos axiales: brainly.com/question/13683145

#SPJ1

5 0
1 year ago
Find the slope of the line that passes through (40,3000) and (60, 4000).
iragen [17]

Answer:

m=50

General Formulas and Concepts:

<u>Pre-Alg</u>

  • Order of Operations: BPEMDAS

<u>Algebra I</u>

  • Slope Formula: m=\frac{y_2-y_1}{x_2-x_1}

Step-by-step explanation:

<u>Step 1: Define</u>

Point (40, 3000)

Point (60, 4000)

<u>Step 2: Find slope </u><em><u>m</u></em>

  1. Substitute:                    m=\frac{4000-3000}{60-40}
  2. Subtract:                       m=\frac{1000}{20}
  3. Divide:                          m=50
3 0
3 years ago
R Which statement is true regarding the diagram of circle P? S P. Х у N The sum of y and z must be 2x. The sum of y and z must b
sveta [45]

Answer

The sum of y and z must be 1/2 x

Step-by-step explanation:

You'll see

5 0
3 years ago
(WILL GIVE BRAINLIEST IF CORRECT)​
Alex

Answer:

C.   40

Step-by-step explanation:

20 + 4x = 180

subtract 20 from both sides

4x = 160

Divide both sides by

x = 40

6 0
3 years ago
Read 2 more answers
Elijah earns $200 for 8 hours of work.What is the rate (in dollars per item)
MAXImum [283]
25 dollars per hour should be the correct answer
6 0
3 years ago
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