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3 years ago

15

Lo siento, solo voy a despotricar en español. Estoy tan cansado y realmente no quiero hacer nada, y todavía tengo Zooms para hac

erlo, si alguien quiere hablar, estoy aquí :(

1 answer:

Crazy boy [7]3 years ago

6 0

Answer:

hola yo estoy aqui contigo

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A brick of mass 4 kg hangs from the end of a spring. When the brick is at rest, the spring is stretched by 3 cm. The spring is t

Zielflug [23.3K]

Answer:

Step-by-step explanation:

In this system we have the force of the spring and the gravitational force. The equation that describes that is

$F_{s}+F{g}=ma\\k(y_0+y)-mg=ma$

where y0 is the equilibrium position when the string is free and y0+y is the new equilibrium position when the object is hanged of the string. By replacing by derivatives we have

$ky_0+ky-mg=ma\\mg+ky-mg=ky=ma\\\\ky=m\frac{d^2y}{dt^2}\\\\my''+ky=0$

the solution for this differential equation is (by using the characterisic polynomial)

$y(x)=Acos(kt)+Bsin(kt)\\k=\omega^2m$

hope this helps!!

7 0

4 years ago

Read 2 more answers

Point O is the center of the circle. What is the value of x?

Bad White [126]

OQ = 8 + 9 = 17
x^2 = 17^2 - 8^2
x^2 = 289 - 64
x^2 = 225
x = 15

8 0

3 years ago

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At the zoo,the ratio of monkeys to gorillas is 5:1

valentina_108 [34]

Answer:

thats a statement

Step-by-step explanation:

5 0

3 years ago

Evaluate the expression when a=3 and b=4<br><br> 2a2 + b =

dedylja [7]

Answer: 16

Step-by-step explanation:

2x3x2+4

6x2+4

12+4

16!

3 0

3 years ago

For what value of x is line a parallel to line b (9x+11)

Helga [31]

Answer:

15

Step-by-step explanation:

124° + 9x + 11 = 180 ➡ 9x = 135° ➡ x = 15

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3 years ago