What is the answer for y = 4cos(5x)?

ivolga24 [154]

You mean a essay. You gotta write that for yourself no one can’t fo it on Brainly for you

8 0

3 years ago

Una barra metálica de 2 m de largo recibe una fuerza que lo provoca una alargamiento o variación en su longitud de 0.3 cm ¿Cuál

Elan Coil [88]

Answer:

La deformación unitaria lineal experimentada por la barra es $1.5\times 10^{-3}$ .

Explanation:

De la Mecánica de Materiales sabemos que la deformación unitaria lineal es la razón de la variación de la longitud con respecto a su longitud inicial. Al asumirse que la variación longitudinal es muy pequeña con respecto a la longitud inicial, se puede utilizar la siguiente ecuación:

$\epsilon = \frac{\Delta l}{l_{o}}$ (Eq. 1)

Donde:

$\epsilon$ - Deformación unitaria, adimensional.

$\Delta l$ - Cambio longitudinal, medido en metros.

$l_{o}$ - Longitud inicial, medida en metros.

Si conocemos que $\Delta l = 3\times 10^{-3}\,m$ y $l_{o} = 2\,m$ , entonces la deformación unitaria lineal es:

$\epsilon = \frac{3\times 10^{-3}\,m}{2\,m}$

$\epsilon = 1.5\times 10^{-3}$

La deformación unitaria lineal experimentada por la barra es $1.5\times 10^{-3}$ .

3 0

4 years ago

An ideal coil and an ideal capacitor can be connected in series or in parallel. The circuits so formed are fed to the same sinus

sashaice [31]

Let the coil inductance be L and the capacitance of the capacitor be C.

When the ideal coil and an ideal capacitor are connected in series,

Xs = L + C

When the ideal coil and an ideal capacitor are connected in parallel,

Xp = (L/C) / (L + C)

Substituting Xs into the equation for Xp,

Xp = (L/C) / Xs

C = L / Xs • Xp

6 0

3 years ago

Starting from the front door of your ranch house, you walk 50.0m due east to your windmill, and then you turn around and slowly

juin [17]

Answer:

velocity = 0.3m/s

speed = 1.21 m/s

Explanation:

The total time it takes to get from the front door to the bench is

t = 27 + 39 = 66 seconds

The net displacement from the front door to the bench is the distance from the front door to the windmill subtracted by the distance from the windmill to the bench

s = 50 - 30 = 20 m

So the average velocity is net displacement divided by total time

v = s / t = 20 / 66 = 0.3 m/s

The total distance from the front door to the bench is the sum of distance from the front door to the windmill and the distance from the windmill to the bench

S = 50 + 30 = 80 m

So the average speed is total distance divided by total time

v = s / t = 80 / 66 = 1.21 m/s

8 0

3 years ago

Dana has a sports medal suspended by a long ribbon from her rearview mirror. as she accelerates onto the highway, she notices th

Dominik [7]

Refer to the diagram shown below.

m = the mass of the medal
T = the tension in the string
g = 9.8 m/s²

Part (a)
The inertial force, F, tends to move the medal away from the windshield when the vehicle accelerates to the right.

Answer: The medal leans away from the windshield.

Part (b)
For force balance,
T cos(15°) = mg
0.9659 T = 9.8m
T = 10.1457m N

Also,
F = Tsin(15°) = 10.1457m*0.2588 = 2.6257m N
The inertial force is equal to the accelerating force, therefore
the acceleration, a, is given by
(2.6257m N) = (m kg)*(a m/s²)
a = 2.6257 m/s²

Answer: 2.626 m/s²

5 0

4 years ago