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felipe vargas

felipe v.

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Viewed Questions

Two of the three resistors in FIGURE EX28.22 are unknown but equal. The total resistance between points $\mathrm{a}$ and $\mathrm{b}$ is $75 \Omega$. What is the value of $R$ ? (GRAPH CANT COPY)

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics

The coefficients of friction between the block and the rail are $\mu_{s}=0.25$ and $\mu_{k}=0.20 .$ Find the magnitude and direction of the smallest force P required $(a)$ to start the block moving up the rail, $(b)$ to keep the block from moving down.

Vector Mechanics for Engineers: Statics and Dynamics

Friction

The Laws of Dry Friction
Draw the shear and bending-moment diagrams for the beam AB, and determine the maximum absolute values of the shear and bending moment.

Draw the shear and bending-moment diagrams for the beam AB, and determine the maximum absolute values of the shear and bending moment.

Vector Mechanics for Engineers: Statics and Dynamics

Internal Forces and Moments

Beams

Assuming the upward reaction of the ground on beam $A B$ to be uniformly distributed and knowing that $P=w a,(a)$ draw the shear and bending-moment diagrams, ( $b$ ) determine the maximum absolute values of the shear and bending moment.

Vector Mechanics for Engineers: Statics and Dynamics

Internal Forces and Moments

Beams

Questions asked

INSTANT ANSWER

The columns of \( Q \) were obtained by applying the Gram-Schmidt process to the columns of A. Find an upper triangular matrix \( R \) such that \( A=Q R \). \[ A=\left[\begin{array}{rr} -2 & 3 \\ 5 & 7 \\ 2 & -2 \\ 4 & 6 \end{array}\right], Q=\left[\begin{array}{rr} -\frac{2}{7} & \frac{5}{7} \\ \frac{5}{7} & \frac{2}{7} \\ \frac{2}{7} & -\frac{4}{7} \\ \frac{4}{7} & \frac{2}{7} \end{array}\right] \] \[ \mathrm{R}=\square \]

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INSTANT ANSWER

Find an orthogonal basis for the column space of the matrix to the right. \[ \left[\begin{array}{rrr} -1 & 7 & 6 \\ 1 & -7 & 2 \\ 1 & -3 & 6 \\ 1 & -3 & -4 \end{array}\right] \] An orthogonal basis for the column space of the given matrix is \( \{\square\} \). (Type a vector or list of vectors. Use a comma to separate vectors as needed.)

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ANSWERED

Scott Stetson verified

Numerade educator

Write an iterated integral for ( iiint_{D} f(x, y, z) d V ) where ( D ) is a sphere of radius 4 centered at ( (0,0,0) ). Use the order ( d z d y d x ). ( iiint_{D} f(x, y, z) d V=int_{square}^{square} int_{square}^{square} int_{square}^{square} f(x, y, z) d z d y d x )

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ANSWERED

Vincenzo Zaccaro verified

Numerade educator

Write an integral for the average value of f(x, y, z) = xyz over the region bounded by the paraboloid z = 16 - x^2 - y^2 and the xy-plane (assuming the volume of the region is known) f = 1/volume ??? xyz dz dy dx

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ANSWERED

Zhumagali Shomanov verified

Numerade educator

Evaluate the following integral. [ int_{0}^{pi} int_{0}^{1} int_{0}^{pi / 2} sin pi x cos y sin z d y d x d z ] ( int_{0}^{pi} int_{0}^{1} int_{0}^{pi / 2} sin pi x cos y sin z d y d x d z=square ) (Type an exact answer, using ( pi ) as needed.)

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ANSWERED

Zack A verified

Numerade educator

Find the volume of the given solid region in the first octant bounded by the plane 8x + 10y + 20z = 40 and the coordinate planes, using triple integrals. The volume of the solid is unit(s)³. (Type an exact answer.)

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ANSWERED

Zack A verified

Numerade educator

Write an iterated integral for (iiint_{D} f(x, y, z) d V) where D is a sphere of radius 6 centered at (0,0,0). Use the order dx dy dz. (iiint_{D} f(x, y, z) d V = int_{square}^{square} int_{square}^{square} int_{square}^{square} f(x, y, z) dx dy dz)

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ANSWERED

Zhumagali Shomanov verified

Numerade educator

Evaluate the following double integral over the region ( mathrm{R} ) by converting it to an iterated integral. [ iint_{R} e^{4 x+y} d A ; R={(x, y): 0 leq x leq ln 4,1 leq y leq ln 5} ] Evaluate the integral. ( iint_{mathrm{R}} e^{4 mathrm{x}+mathrm{y}} mathrm{dA}=square ) (Type an exact answer.)

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ANSWERED

Zack A verified

Numerade educator

Find the volume of the following solid. The solid between the cylinder ( f(x, y)=e^{-x} ) and the region ( R={(x, y): 0 leq x leq ln 5,-2 leq y leq 2} ). The volume of the solid is ( square ). (Type an exact answer.)

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ANSWERED

Zhumagali Shomanov verified

Numerade educator

Evaluate the following double integral over the region ( mathrm{R} ). [ iint_{R} sqrt{frac{x}{y}} d A ; R={(x, y): 0 leq x leq 4,9 leq y leq 16} ] Evaluate the integral. ( iint_{R} sqrt{frac{x}{y}} d A=square ) (Type an exact answer.)

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