Numerade

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The president who established civil service was: Chester Arthur William Henry Harrison. Ulysses S. Grant. Teddy Roosevelt

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Question 5 When using the Lens Equation, a real image has a negative image distance positive image distance positive object distance 0.5 pts

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QUESTION 40 . 1 POINT Simplify: \sqrt{441} + 400. Provide your answer below:

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Question 29 [1.5 Mark]: Students are given the opportunity to participate in workshops. There are 8 workshops to choose from: W1, W2, W3, W4, W5, W6, W7, W8. Each student is allowed to choose exactly 2 workshops. Students cannot participate in two workshops at the same time. The choices of the students are shown in the table below. W1 and W4 W3 and W5 W1 and W6 W3 and W7 W1 and W8 W4 and W8 W2 and W6 W5 and W6 W2 and W7 How many different timeslots are needed so that students can participate in the workshops they chose? Describe the details of the timeslots. Solution:

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Discuss the value of professional licenses. Research a few of them and discuss how they are maintained by the professional who holds the license. (We are referring to professional licenses, not licensing of facilities as a whole) 2. What is the role of professional licensing boards? What happens if a professional loses their license? Can they get it back? As a consumer of health care, does the licensing process give you confidence about your health care?

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2. A 10.0 kg, 1 m-long beam rests on two posts and supports a 7.00 kg object as shown in the illustration at right: [3+3+4pt] a. Write down in detail the conditions for static equilibrium of this system: two equations that guarantee no translational motion, and one that guarantees that no rotation takes place; denote/label the chosen pivot on the diagram: force, ?: force, ?: torque, ?: [10pt] b. Compute the weight that the post A must be able to support. [10pt] c. Compute the weight that the post B must be able to support. 100 cm 30 cm $R_{A,y}$ $R_{B,y}$ 75 cm A B

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14.2 A conducting sphere of radius $r_1$ is concentrically surrounded by a conducting shell with an inner radius $r_2$ ($> r_1$). The sphere has a uniform free-charge density $\sigma_f$ on its surface, and the outer conducting shell is grounded. The region between the two conductors is filled a dielectric that has dielectric constant $\epsilon_r$. (a) Using appropriate boundary conditions for the potential, find $V(r)$ in the region between the two conductors. (b) From your answer in (a) find the electric field $E(r)$ in the same region. (c) Find the polarization $P(r)$ of the dielectric. (d) Calculate the capacitance between the two conductors. Is the result what you expected? Explain. Answer: (a) $V(r) = \frac{\sigma_f r_1^2}{\epsilon_0 \epsilon_r} \left[\frac{1}{r} - \frac{1}{r_2}\right]$, (b) $E(r) = \frac{\sigma_f r_1^2}{\epsilon_0 \epsilon_r r^2} \hat{r}$, (c) $P(r) = \sigma_f \frac{\epsilon_r - 1}{\epsilon_r} \frac{r_1^2}{r^2} \hat{r}$ (d) $C = \frac{4\pi \epsilon_0 \epsilon_r}{1/r_1 - 1/r_2}$

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QUESTION 18 is useful for identifying procedures and summarizing the decision-making process for one step of a system. a. Feasibility reports b. Decision tables c. Entity-relationship diagrams d. Data dictionaries QUESTION 19 Managers are usually classified into three categories: a. Executive b. Development c. Middle d. Strategic e. Operational QUESTION 20 is the phase of system development in which the current system and identified problems are studied in depth and the needs of the system are identified. a. System design b. Preliminary investigation c. System analysis d. System acquisition

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A 100.0 kg block of aluminum (Body A), is initially @ 100°C. A 209.3 kg block of steel (Body B) is initially at 0°C. The two blocks are then connected via a short, copper cylinder for 1.5 minutes, during which time heat flows at a rate of 10.0 W. Other than when the connection occurs, the blocks are perfectly insulated.\ $C_{AI} = 0.90$ kJ/kg-K $C_{steel} = 0.43$ kJ/kg-K a) Determine the amount of entropy produced in this process. b) Redo Part (a) treating each body as a thermal energy reservoir. Is the answer close to that of Part (a)? Explain why or why not. Hint: For the thermal energy reservoirs (TERs), use the definition of entropy change for an internally reversible process (i.e., since the TERs are each always at a uniform temperature, they, by definition, remain in thermal equilibrium). Alternatively, you can use the equation: $S_2 - S_1 = mcln(\frac{T_2}{T_1})$ However, you have to solve the temperature rise for a finite mass as a parameter and then take the limit of $mcln(\frac{T_2}{T_1})$ as the mass goes to infinity (and the corresponding temperature rise goes to zero). It works out nicely!

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2. The circuit below contains an ideal transformer. All parameters are as marked (impedances in $\Omega$). The load impedance is $Z_L = 0.05\angle25^\circ \Omega$ and the load voltage is $\tilde{V}_L = 12\angle0^\circ$ V. j1.1 4.7 j0.007 +\\ -j52 $Z_L$ $\tilde{V}_L$ 50:3 a. Redraw the circuit with all impedances referred to the primary (high- voltage) side. Find all component values. b. Redraw the circuit with all impedances and the source referred to the secondary (low-voltage) side. Find all component values. c. From either re-drawn circuit, determine $\tilde{V}_s$, the voltage at the source (as a phasor, in polar form).

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bryan v.