Numerade

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The 1.5-kg block slides along a smooth plane and strikes a nonlinear spring with a speed of 4 m/s. The spring is termed nonlinear because it has a resistance of where . 1) What principle is applied to relate displacement & velocity Group of answer choices Newton’s 2nd Law Work-Energy Principle D’Alembert Impulse-Momentum

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PCE4701/101 Question 2 Design an inductor to be placed between a 20 V DC source and a 10 V DC load. A PWM is used to chop the 20 V source at a 50% duty cycle. The current flowing through the inductor is shown in Fig. 2. The chopping frequency is 20 kHz . Design the filter inductor using a E168-8 Mn-Zn ferrite core with B, =0.3T and \mu _(r)=150. The data is given below as shown in Table 1. Table 1 E168-8 Mn-Zn ferrite core data \table[[Part No,\table[[Al

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The tail rotor of a helicopter has a mass of MR =60 kg, including a rotating unbalance of me=0.075 kgm. The tail section has a length of 4 m, has a mass of MT = 600 kg, and can be simulated as a cantilever beam with an approximate constant circular cross-sectional area of diameter=200 mm, made of aluminum (E=73 GPa). The tail has a damping mechanism not shown that provides a damping coefficient of $\zeta$ =0.15 Determine the force transmitted to the base of the tail section when the blades rotate at 1600 rpm. Hint: Model the tail section as a cantilever beam of mass MT with an end mass MR, the Area moment of Inertia of a circular rod is I=(1/4) $\pi$R^4 295.4 N 230.9 N 197.7 N 178.3 N

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8.0 Pressure Variation in a Fluid of Constant Density Example 6 At what depth below the free surface of oil having a mass density of $ 600 \mathrm{~kg} \cdot \mathrm{~m}^{-3} $ will the pressure be equal to 1 bar?

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One of the advantages of exporting is that it provides scale economies. True or False

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Find the density, in g/cm3 , of a metal cube with a mass of 54.8 g and an edge length ( l ) of 3.15 cm . For a cube, V=l3 .

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(a) Find two different matrices $ \mathrm{B} $ and $ \mathrm{C} $ in row-echelon form that are row-equivalent to A. (b) Is the reduced row-echelon form of matrices $ B $ and $ C $ in part (a) the same matrix? $ A=\left[\begin{array}{rrrr}1 & 5 & -6 & 1 \\ 1 & 0 & -6 & 5 \\ 0 & 1 & 1 & 0 \\ 5 & 24 & 0 & -5\end{array}\right] $

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What is the average value of the squares of the first 10 integers? Express your answer using three significant figures.

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If a good is in excess supply, what do we expect to happen to the price of the good as the market reaches equilibrium? Group of answer choices It will decrease. It will stay the same. It will increase. We don't have enough information to infer anything.

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An object of mass m is held at a vertical height h above ground level. It is then released and falls under the influence of gravity only. The total mechanical energy of the object is decreasing. • True False

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