Numerade

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A student working an independent research project wants to investigate if there is an association between the amount of sleep someone gets and their body mass index (BMI) - an indicator of body fatness. For a sample of 45 students, she records their BMI and the average amount of sleep they get on weeknights over a two-week period. What would it mean for average amount of sleep to be negatively correlated with BMI? It would mean that individuals who get more sleep tend to have lower BMIs. It would mean that the more sleep individuals get, the higher their BMI tends to be.

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Consider the following compounds: A) Fe(CO)5 (l)B) Br2 (l)C) CO (g)D) I2 (s)E) C2H2 (g)F) Ne (g) a) The compound that has the lowest entropy is Multiple choice 1 Question 2 CO (g) C2H2 (g) Ne (g) I2 (s) Br2 (l) Fe(CO)5 (l) b) The compound that has the highest entropy is Multiple choice 2 Question 2 C2H2 (g) I2 (s) Br2 (l) Fe(CO)5 (l) Ne (g) CO (g)

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A neuron and an astrocyte can descend from the same progenitor cell. True or False True False

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Lane has been married for 5 years but has suspected the whole time that his partner was having an affair, despite not having any concrete evidence of this. He assumes that every time his partner goes out, he is meeting someone else. Lane can't share his suspicions with anyone, because he doesn't trust others to keep his secrets safe. In addition, Lane is sure that his co-workers have been spying on him and are talking about his partner's affair behind his back. It sounds like Lane most likely has: a. schizoptypal personality disorder b. schizophrenia c. paranoid personality disorder d. schizoaffective disorder

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In the individual demand curve, as the price gets _____, the quantity demanded gets _____.

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Governments use many ways to make it harder for foreign businesses to succeed EXCEPT: import quotas. minimum wages. tariffs. red tape.

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Amount of oil that leaked out of the tank from 15 to 45 minutes after oil started leaking? I.f45-f15 .15+ a.Ionly b.I and II only c.II and IV only d.I,II,and IV only e.IIIIII,and IV ivIf fgxdx=4a+b,thenfgx+7dx= a.8b-i1a b.8b+11a c.8b-3a d.7b-7a e.4a+b+7 vThe expression1+ is a right-endpoint approximation for which of the following integrals? a. ax 2J b. xdx J1 1+xdx c5 xpx

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5 pts) Forms used to make a concrete basement wall are shown. Each 4ft wide form (into the page) is held together by two tie rods, one at the top and one at the bottom as indicated. Determine the tension force in the upper and lower tie rods. (Hint: consider only one side) Relevant data: Liquid concrete, specific $y = 150 \text{lbf/} ft^3$ weight Moment of inertia about centroid for rectangular area of base $b$ and height $h$ $I_{cg} = \frac{1}{12}bh^3$

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6. a) What is the minimum pulse duration of a laser if the separation between the mirrors is 2 m and the length of the rod ids 10 cm and Is the pulse separation. 7 The original ruby laser consisted of 10 cm rod, (medium), coated in one end with 99.9% R mirror and the other with 90% R mirror. Assuming that there is no excited state absorption, i.e. $\alpha$=0, in the laser, calculate a) the fractional loss per pass in the laser cavity and b) the decay time of the cavity 8 Calculate the maximum Q-switched power output from a Nd:YAG laser with $\tau_c$ = 1.1 x10$^{-8}$ sec. if the mode occupies a diameter of 2 mm within the medium -Nd:YAG rod-. The gain is 100 times the threshold value.

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A mechanical system is shown in Fig. 2.2, which is subjected to a known displacement $x_3(t)$ with respect to the reference. (a) Determine the two independent equations of motion (Hint: draw two Free body Diagrams) (b) Draw electronic analogous system of the given mechanical system. (c) Assume initial condition are zero, obtain Laplace transform equations based on the answers of P2.2a and determine the transfer function $T_{13}(s)$.

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mariano w.