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david sweeney

david s.

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15. a. Yolanda and Yoko ran in a 100 -yd dash. When Yolanda crossed the finish line, Yoko was 10 yd behind her. The girls then repeated the race, with Yolanda starting 10 yd behind the starting line. If each girl ran at the same rate as before, who won the race? By how many yards? b. Assuming the girls run at the same rate as before, how far behind the starting line should Yolanda be in order for the two to finish in a tie?

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Calculate either [H3O] or [OH] for each of the solutions at 25 degrees. Solution A: [OH] = 1.43 x 10^-7 M; [H3O]

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Bhekboard cput - Search View Assignment 35 OF 35 QUESTIONS REMAINING Question 3 6 Points Gven these cata ina study on how the rate of a reaction was affected by the concentration of the reactants. what is the numerical wexect the rate constant ( \( k \) ) for this reaction (where units match the data)? 1. 0200 D) 220 0.120 0.600 5.0 R8509 0.400 0.409 80.0 0200 0.100 0.200 15.0 0.100 0.200 5.0 \( \& \) 0.200 0400 20.0 anday (B) \( = \)

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Write the exponential expression in an equivalent logarithmic form. y = 5^x

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A central bank that wants to increase the federal funds rate will: - raise the discount rate. - change the federal funds rate directly. - reverse quantitative easing. - raise the IORB rate.

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Now construct 20 different 90% confidence intervals using each of these columns. Since we already know that μ = 80, we will be able to see how well the confidence intervals do in estimating μ. We do this by looking at each of the 20 confidence intervals to see how many of them actually contain the population mean (in this case 80) within the interval. To construct the intervals, click on STAT > BASIC STATISTICS > 1-SAMPLE-T. We use the T-Test here since our sample size for each column is less than 30 (n = 15), along with the fact that the population standard deviation was NOT given. If the population standard deviation is known, you use the Z-test versus the T-test. In the screen that appears, you will use each of the 20 columns to construct 20 different confidence intervals. Under Samples in Columns, type in C1- C20. Click on Options and enter 90 for Confidence Level (since a 90% confidence interval was requested in the given information). Be sure the Alternate box reads "not equal". Click OK. The confidence int

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A slingshot consists of a light leather cup containing a stone. The cup is pulled back against two parallel rubber bands. It takes a force of 15 N to stretch either one of these bands 1.0 cm. (a) What is the potential energy stored in the two bands together when a 49-g stone is placed in the cup and pulled back 0.12 m from the equilibrium position? 29.09 X Your response differs from the correct answer by more than 10%. Double check your calculations. J (b) With what speed does the stone leave the slingshot? m/s

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5.6 Provide plots for the following functions (over a time span and with a time scale that will appropriately display the shape of the associated waveform): (a) $v_1(t) = 100e^{-2t}u(t)$ (b) $v_2(t) = -10e^{-0.1t}u(t)$ (c) $v_3(t) = -10e^{-0.1t}u(t-5)$ (d) $v_4(t) = 10(1 - e^{-10^3t})u(t)$ (e) $v_5(t) = 10e^{-0.2(t-4)}u(t)$ (f) $v_6(t) = 10e^{-0.2(t-4)}u(t-4)$

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Solve all problems using the finite element stiffness method. Determine the free-end deflection for the tapered beam shown in Figure P4-46. Here I (x) = lo(1 + nx=L) where lo is the moment of inertia at x = 0. Compare the exact beam theory solution with a two-element finite element solution for n = 7[12]. Where $v_1 = \frac{1}{17.55} \frac{PL^3}{EI_0}$, $\theta_1 = -\frac{1}{9.95} \frac{PL^2}{EI_0}$

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Write a program that calculates the different ways to make change for n cents, using quarters (25 ¢), dimes (10 ¢), nickels (5 ¢), and pennies (1 ¢). The value for n will be given as a command-line parameter. The program should show the number of ways, as well as a list of the combinations of coins. Example: $ java MakeChange 6 2 ways: 0 quarters, 0 dimes, 1 nickel, 1 penny 0 quarters, 0 dimes, 0 nickels, 6 pennies

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