Concept explainers
Fluid Force Evaluate the following two
(a)
(b)
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Chapter 8 Solutions
Calculus, Early Transcendentals (Instructor's)
- Heat transfer Fourier’s Law of heat transfer (or heat conduction) states that the heat flow vector F at a point is proportional to the negative gradient of the temperature; that is, F = -k∇T, which means that heat energy flows from hot regions to cold regions. The constant k > 0 is called the conductivity, which has metric units of J/(m-s-K). A temperature function for a region D is given. Find the net outward heat flux ∫∫S F ⋅ n dS = -k∫∫S ∇T ⋅ n dS across the boundary S of D. In some cases, it may be easier to use the Divergence Theorem and evaluate a triple integral. Assume k = 1. T(x, y, z) = 100 + e-z;D = {(x, y, z): 0 ≤ x ≤ 1, 0 ≤ y ≤ 1, 0 ≤ z ≤ 1}arrow_forwardDetermine the type of points on the X (u, v) = (u, v, u?) surface. Differential geometryarrow_forwardSeawater has density 1025 kg/m³ and flows in a velocity field v = yi + x j, where x, y, and z are measured in meters and the components of v in meters per second. Find the rate of flow outward through the hemisphere x2 + y2 + z2 = 64, z 2 0. kg/sarrow_forward
- Stokes' Theorem (1.50) Given F = x²yi – yj. Find (a) V x F (b) Ss F- da over a rectangle bounded by the lines x = 0, x = b, y = 0, and y = c. (c) fc ▼ x F. dr around the rectangle of part (b).arrow_forwardCalculus Answer Calculate the work that a constant force field F does on a particle that moves uniformly once along the path of the curve x2 + y2 = 1.How much is the work now worth if we take F(x, y) = (αx, αy), where α is any positive constant?arrow_forwardUv Use the change of variable x = and y in order to v+ 4 v + 4 compute the integral 4.x + y dA. D is the quadrilateral formed by the lines with equations 4.x+y = 5, 4x+y = 6, y = x and and y = 2x.arrow_forward
- Coulomb's Law states that the force of attraction between two charged particles is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. The figure shows particles with charge 1 located at positions 0 and 2 on a coordinate line and a particle with charge −1 at a position x between them. It follows from Coulomb's Law that the net force acting on the middle particle isarrow_forwardCalculate the line integral of the vector field F = (y, x,x² + y² ) around the boundary curve, the curl of the vector field, and the surface integral of the curl of the vector field. The surface S is the upper hemisphere x² + y + z? = 25, z 2 0 oriented with an upward-pointing normal. (Use symbolic notation and fractions where needed.) F. dr = curl(F) =arrow_forwardFind the gradient of the functions below. a)f (x, y, z) = sin(xyz)arrow_forward
- Q1,- A- Locate the centroid (X only) of the shaded area y=12 -3x 3 m Fig. L.A 2 marrow_forwardGRAD, DIV, CURL, V², DIRECTIONAL DERIVATIVE Let f zy + yx, v = [y, z, 4z − x], w = [y², z², x²]. Find 37. (grad f) × grad f, (grad f) grad f 36-45 =arrow_forwardSeawater has density 1025 kg/m³ and flows in a velocity field v = yi + x j, where x, y, and z are measured in meters and the components of v in meters per second. Find the rate of flow outward through the hemisphere x² + y² + z² = 36, z ≥ 0. kg/sarrow_forward
- Calculus For The Life SciencesCalculusISBN:9780321964038Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.Publisher:Pearson Addison Wesley,
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