Numerade

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A signal with a bandwidth of 1.2 kHz must be sampled. a. What is the Nyquist rate of the signal? Nyquist Rate = 2*(bandwidth) or Nyquist Rate (Fnr) = 2*(freq max) Fnr = 2*(1.2 khz) = 2.4khz b. What is the minimum sampling frequency needed to avoid aliasing? Fn => Fnr Fn => 2.4khz (2400 hz) c. Unbeknownst to us, the signal is contaminated with noise at a 20-kHz rate. What happens to this noise when sampled at the frequency specified in part (b)?

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Which species has the smaller bond angle, $H_3O^+$ or $H_2O$? $H_3O^+$ $H_2O$

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CuSO4 absorbs light strongly at a wavelength of 635 nm. Consider that you measure the initial intensity of light, $I_0$, entering the solution at 635 nm, and the intensity of light passing through the solution, I, at 635 nm. Sample 1: 0.100 M CuSO4 Sample 2: 0.200 M CuSO4 Which of the following statements is true? The absorbance of light, A, will be higher for Sample 1 compared to Sample 2. The absorbance of light, A, will be the same for Sample 1 compared to Sample 2. The absorbance of light, A, will be lower for Sample 1 compared to Sample 2.

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Write the system of equations as a matrix equation AX = B, with A as the coefficient matrix of the system. x + 7y = 30 6x + 2y = 20

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You can start an application without a data file using the file manager. 1) True 2) False

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a. The genotype associated with the condition Alkaptonuria is homozygous recessive (hh). b. Matej and Viktoria might have the following possible genotypes: Heterozygous (Hh) or Homozygous dominant (HH). c. The combination of genotypes that would result in Matej and Viktoria having a child affected by Alkaptonuria is if both parents are carriers (Hh) and pass on the recessive allele to their offspring.

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Use a graph to estimate the limit $ \lim_{\theta \to 0} \frac{\sin(8\theta)}{\theta} $. Note: $\theta$ is measured in radians. All angles will be in radians in this class unless otherwise specified. $ \lim_{\theta \to 0} \frac{\sin(8\theta)}{\theta} = \square $

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The process of establishing a friendship with another person involves the select answer social construction dynamics functionality symbolic interactions of shared meanings such as creating nicknames for each other, communicating in gestures that others might not understand, and disclosing secrets to strengthen the friendship bond and trus

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Eugenics is a pseudo-scientific field invested in developing genetic modification and other medical technologies that "improve" the human race by removing undesirable physical and/or psychological traits. In practice, it has been used to reinforce white supremacy and enact violence against marginalized people and their communities. Margaret Sanger, an early birth control advocate, supported eugenics. True False

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A clumsy chemist has accidentally mixed together three samples of monodisperse poly(propylene carbonate) (structure shown below). The resulting mixture contains the following components: 6.0 g of poly(propylene carbonate) with molar mass 30,000 g mol$^{-1}$, 10.0 g of poly(propylene carbonate) with molar mass 75,000 g mol$^{-1}$, and 8.0 g of poly(propylene carbonate) with molar mass 120,000 g mol$^{-1}$. ? RO $\qquad\qquad\text{O}$ $\qquad\qquad\text{||}$ $\qquad\text{R'}$ $\qquad\text{O}$ $n$ poly(propylene carbonate) (i) Calculate the degree of polymerisation for each of the three monodisperse samples added to the mixture, showing your working. (ii) Calculate the number average molar mass ($M_n$) and weight average molar mass ($M_w$) for the mixture, showing your working. (iii) Using your values from part (ii), calculate the dispersity (D) of the mixture, showing your working. (iv) Suggest an experimental technique which could be used to separate the mixture into its three polymeric components. Briefly describe how this technique would separate the components.

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anthony l.