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Recent research indicates that the effectiveness of antidepressant medication is directly related to the severity of the depression (Khan, Brodhead, Kolts & Brown, 2005). Based on pretreatment depression scores, patients were divided into four groups based on their level of depression. After receiving the antidepressant medication, depression scores were measured again and the amount of improvement was recorded for each patient. The following data are similar to the results of the study. Low Moderate High Moderate Moderately Severe Severe 1.2...
determine 1) the maximum stress in the bar if P=9kN.
3.0 3.2 2.8 WW 2.6 3.0 N W 2.4 N hi 2.8 2.2 svg (w - 21) K - 4.0 K 2.0 2.6 3.01 2.0 1.8 w IS 2.4 1.6 w h 1.2- 1.1 1.4 2.2 LATIN . 1.2 2.0 1.0 0 0.1 0.6 0.7 0.8 0.9 1.0 0.5 0.2 0.3 2r 0 0.4 0.5 0.1 0.2 0.3 0.4 h 3.2 mm 48 mm 32 mm Р P r =...
Label NMR spectra.
Label
Functional groups: Esters- ethyl acetate
# of unique H environment
local chemical environment
# of H in each environment
# of neighboring protons
'H NMR Spectrum in CDCI; -2.289 L2.195 TTTTTTTTTTTTTTTTTTTTTTTTT 2.8 2.6 2.4 2.2 2.0 1.6 1.6 1.4 1.2 1.6 0.8 0.6 0.4 ppm 26.07 38.09 35.84 -0.806 -0.830 0.781 -.4 1.2 1.0 0.8 0.6 0.4 ppm 35.84 2.243 2.219 - -2.269 22.195 2.6 4 .4 2.2 2.0 1.8 1.6 26.07 1.4 38.09
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The breaking strengths of carbon fibers, which are used in fibrous composite materials, were measured by randomly selecting samples of 5 fibers. See attached data spreadsheet contains the data. a. Form an x-bar/R chart. b. Based on your answer to part a, would you say that the process is in control, or 1. not? Explain your answer. Also, discuss anything unusual that...
Problem 2 Consider the sinusoidal signal x(t) shown below. 10 8 6 4 2 -2 4 6 -10 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3 t (seconds) Write an equation for this signal.
To give you more practice with analyzing NMR spectra, match each of the following 'H-NMR spectra to one of the five possible compounds (structures below). Assign the NMR peaks to their respective hydrogens. Possible compounds: CH2. (H3 diethyl malonate p-ethylanisole OH 3-methylbutanal 1-pentene 1-propanol 6.0 2.0 4.8 4.6 4.4 4.2 4.0 3.8 3.6 3.4 3.2 3.0 2.8 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 ppm a. 1.80 1.70 1.60 1.50 1.40 1.30 3.0 ( 2.0 | 2.0 2.32...
A pulsar is observed to have a period of 1.6 seconds. Move the left point of the line to show where on the graph the pulsar's period is now (at time 0), and move the right point of the line to show how the period will change over time. 2.8 2.6 2.4 2.2 1.8 1.6 1.4 1.2 0.8 0.6 0.4 0.2 0 1 2 3 45 6 7 8910 Time (millions of years)
Problem 5 Consider the signal y(t) shown below: 4 3 2 0 2 -3 -4 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3 t (seconds) Write an equation for y(t) in the form y(t)-A cos(ω°1+ φ) where you determine A, ω° and φ from the plot.
blem 1. A signal varies as y(t) 1000sin(40Tt) + 500 sin(150rt). 1. Compu signal Compute Nyquist frequency for the signal. Does aliasing show up in the sampled signal provided a sampling frequency of 100 H Support your answer with appropriate calculations & using folding plot below. Compute the aliasing frequency. te the maximum frequency that can be represented in the resulting discrete 2. 3. 4. Sin 3.2 2.8 In-phase tofsf 2.6 2.4 2.2 Out-of phase 1.8 1.6 1.4 0.4 0.8...
7. i) Let n and k be some given positive integers, and x a 1-dimensional NumPy array of length n. Write a Python code that creates the 2-dimensional NumPy array which has k columns all identical to x. You may import numpy as np Perform the test case: ne5 k-3 x = np.arange(0,1,0.2) # the output should be [[. 0. 0.] [0.2 0.2 0.2] [0.4 0.4 0.4) (0.6 0.6 0.6) [0.8 0.8 0.8]] 7. ii) Let a, b, c be...