Questions asked
A report produced by the Pew Research Center’s Project for Excellence in Journalism summarized the results of a survey on how people get their news. Of the 2342 people in the survey who own a desktop or laptop, 1639 reported that they get their news from the desktop or laptop. The sample size = The count of success = The sample proportion = (Answer must be in the format: X.X) The standard error = (Answer must be in the format: X.XXXX) The confidence interval at the 95% level of confidence is (, ) (Answer must be in the format X.XXX)
Question 5 Routh Hurwitz Stability Criterion Use the Routh Hurwitz array to determine the location (right half plane, left half plane or on imaginary axis) of the closed-loop poles of the following closed-loop control system shown in Fig. 5 below and state the stability of the system. (10) R(s) 1 s+2 s-7 s^2-s+6 C(s) Fig. 5
Match the following arguments to the logical argument form that they instantiate: (A1) "If the brain is needed for thought, then thought always occurs in the head. If thought always occurs in the head, then no spirit without a body ever thinks. Therefore, if the brain is needed for thought, then no spirit without a body ever thinks."
21) Determine the number of electrons and identify the correct symbol for an atom with 17 protons and 18 neutrons. A) 17 electrons, $^{35}_{17}Cl$ B) 18 electrons, $^{36}_{18}Ar$ C) 17 electrons, $^{17}_{17}Cl$ D) 17 electrons, $^{35}_{17}Cl$ E) 18 electrons, $^{36}_{18}Ar$
2. Explain why understanding the economic concept of opportunity cost is essential to managers making better decisions.
QUESTION 1 After the mid-1800s, moral therapy declined as a treatment for the mentally ill in the United States because a. the number of patients in mental institutions also declined. b. new biologically based treatments became available. c. the number of people available to staff mental hospitals increased. d. immigrants caused an increase in the mental hospital population.
3. You are competing in a bowling competition with a friend. You both release your bowling balls at the same time. Your ball has an initial velocity of 7 m/s and slows down at a rate of 0.35 m/s² and your friend's ball has an initial velocity of 10 m/s and slows down at a rate of 0.42 m/s². If the bowling lane is 18 m long, whose ball will knock down the pins first?
2. Determine if the lines \((x,y,z) = (-2,-2,0) + t(-1,1,-2)\) and \((x,y,z) = (2,-1,3) + s(-2,-3,1)\) are either parallel, intersecting, or skewed. If the lines are intersecting find the point of intersection.
Obtain a state-space representation of the mechanical system shown in below. The external force u(t) applied to the mass m2 is the input to the system. The displacements y and z are measured from their respective equilibrium positions and are the outputs of the system. (m1 = 10, m2 = 20, b = 30, k = 20, u(t) \to Unit step function)
Question 1- Explain the difference between an overload an a short circuit An overload is a Question 3- Why can an overload be left on the system for a relatively long period of time (minutes)? Question 4- Why must a short circuit be disconnected from the system within a very short period of time (cycles)? Question 7- Explain the difference between an arcing fault and a bolted fault? Question 11- What is an asymmetrical current?
