(1)The velocity v (m/s) of air flowing past a flat surface is measured at severaldistances y (m) away from the surface. Determine the shear stress T (N/m²)at the surface (y = 0), using Newton's viscosity law: T = u(dv/dy). Use thefollowing data, and provide an O(h) approximation and an O(h²)approximation. Assume μ = 1.8 × 10-5 Ns/m². (Tip: see Fig. 23.1 for finitedifference approximations)y (m)0.00.0020.0040.0060.012v (m/s)0.00.2870.5930.8991.915

Answered: (1) The velocity v (m/s) of air flowing…

C++ for Engineers and Scientists

4th Edition

ISBN:9781133187844

Author:Bronson, Gary J.

Publisher:Bronson, Gary J.

Chapter1: Fundamentals Of C++ Programming

Section: Chapter Questions

Problem 2PP: (Conversion) An object’s polar moment of inertia, J, represents its resistance to twisting. For a...

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The charges and coordinates of two charged particles held fixed in an xy plane are 91 = 3.01 μC, x1 = 4.94 cm, y₁ = 0.559 cm and 92 = -5.09 µC, x2 = -2.10 cm, y2 = 1.11 cm. Find the (a) magnitude and (b) direction (with respect to +x-axis in the range (-180°; 180°]) of the electrostatic force on particle 2 due to particle 1. At what (c) x and (d) y coordinates should a third particle of charge 93 = 5.17 μC be placed such that the net electrostatic force on particle 2 due to particles 1 and 3 is zero? (a) Number i Units (b) Number i Units (c) Number i Units (d) Number i Units
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(Conversion) An object’s polar moment of inertia, J, represents its resistance to twisting. For a cylinder, this moment of inertia is given by this formula: J=mr2/2+m( l 2 +3r 2 )/12misthecylindersmass( kg).listhecylinderslength(m).risthecylindersradius(m). Using this formula, determine the units for the cylinder’s polar moment of inertia.
The following is used to model a wave that impacts a concrete wall created by the US Navy speed boat.1. Derive the complete piecewise function of F(t) and F()The concrete wall is 2.8 m long with a cross-section area of 0.05 m2. The force at time equal zero is 200 N. It is also known that the mass is modeled as lumped at the end of 1200 kg and Young’s modulus of 3.6 GPa2. Use *Matlab to simulate and plot the total response of the system at zero initial conditions and t0 = 0.5 s
Suppose that a parachutist with linear drag (m=50 kg, c=12.5kg/s) jumps from an airplane flying at an altitude of a kilometer with a horizontal velocity of 220 m/s relative to the ground. a) Write a system of four differential equations for x,y,vx=dx/dt and vy=dy/dt. b) If theinitial horizontal position is defined as x=0, use Euler’s methods with t=0.4 s to compute the jumper’s position over the first 40 s. c) Develop plots of y versus t and y versus x. Use the plot to graphically estimate when and where the jumper would hit the ground if the chute failed to open.
Determine the transfer function, of the rotational mechanical system shown in T(s) Figure Q2. The variables 6,(t) and 02(t) refer to angular displacement of motion, while T(t) is a torque applied to the system. Given the value of spring, damping coefficient and inertia as; J: 5 kg-m? Di: 5 N-m-s/rad J2: 10 kg-m? K : 6 N-m/rad K2 : 5 N-m/rad D::4 N-m-s/rad D3:2 N-m-s/rad T(t) e,(1) D2 K2 0000 D1 D3 Figure Q2
5
A tube 1.30 m long is closed at one end. A stretched wire is placed near the open end. The wire is 0.357 m long and has a mass of 9.50 g. It is fixed at both ends and oscillates in its fundamental mode. By resonance, it sets the air column in the tube into oscillation at that column's fundamental frequency. Assume that the speed of sound in air is 343 m/s, find (a) that frequency and (b) the tension in the wire. (a) Number i 66.0 (b) Number i Units Hz Units
The displacement of an oscillating spring can be described by x = A cos(wt) where x = displacement at time t, A = maximum displacement, w = angular frequency, which depends on the spring constant and the mass attached to the spring, and t = time. Find the displacement, x, with maximum displacement A of 4 cm, for times from 0 to 120 seconds with increments of 30 seconds, and angular frequencies from 0.4 to 0.6 radians/sec, with increments of 0.1 radians/sec. The displacement for all combinations of times and angular frequencies needs to be calculated. Use meshgrid. Display your results in a matrix with angular frequencies along the top row and times along the left column like so (you may put zero, 0, or NaN, in the upper left corner:

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