Questions asked
Name REPORT 6.1 (continued) Section Date Post-Lab Questions Answer the following questions. Show all of your work for full credit! Use correct sig. figs and units! 1 Your instructor will assign you an energy level for an excited electron in a hydrogen atom between 3 and 6. Assigned n = 4 a Using the Rydberg equation, calculate the visible wavelength of light emitted as the electron drops back to the second energy level. Convert the units to nm. $\frac{1}{\lambda} = R_H(\frac{1}{n_f^2} - \frac{1}{n_i^2})$ 1.097x10$^7$/m 6
Using the multiplicative congruential method, find the period of the generator for a = 13, m = 2^{6} = 64, and $X_{0} = 1, 2, 3, 4.$
Question 13 What appeared in the fossil record during the PETM for the first time? O Primates Birds Mammals O Reptiles
Let X be a random variable with density function $f_X(x) = \begin{cases} \frac{3}{56}x^2 & , 2 \le x \le 4 \\ 0 & , o.w \end{cases}$. Find the probability\newline density function of \newline (a) $Y = e^{-X}$ \newline (b) $Z = (X - 3)^2$
Imagine three point charges at the corners of an isosceles triangle: qâ‚ = 2.22 x 10â»Â¹â° C, qâ‚‚ = 3.33 nC, and q₃ = 4.44 x 10â»â¸ C. The charges qâ‚ and qâ‚‚ are 1.00 m apart and form the triangle's base. The triangle is 0.250 m tall. If q₃ is at the top, what is the magnitude and direction of the resultant force on q₃? (4.08 x 10â»â¶ N, 150.2°)
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2.6. The load shown in Figure 2.22 consists of a resistance R in parallel with a capacitor of reactance X. The load is fed from a single-phase supply through a line of impedance $8.4 + j11.2 \Omega$. The rms voltage at the load terminal is $1200/0^{\circ} V$ rms, and the load is taking 30 kVA at 0.8 power factor leading. (a) Find the values of R and X. (b) Determine the supply voltage V.
4. (20 points) Calculate and the Fourier transform of the given pulse signal (using the Fourier transform equation introduced in class). \begin{equation*} x(t) = \begin{cases} 1, & |t| < T_i \\ 0, & |t| > T_i \end{cases} \end{equation*}
Problem 8) For the four-bar linkage shown, at what approximate angle $\beta$ does $\omega_2 = \omega_4$? link 2 3 cm link 3 6 cm $\theta_2 = 45^\circ$ $\theta_3 = 30^\circ$ B B link 4 8 cm $\omega_2$ $O_2$ $O_4$ a) $50^\circ$ b) $100^\circ$ c) $140^\circ$ d) $160^\circ$
Problem 8 (15 pts) The follower motion profile for a cam-follower needs to fit the specifications below: a. Dwell (for 0.5 seconds). b. Accelerate to a speed of 6 in/sec (for 0.25 seconds). c. Remain at a constant velocity of 6 in/sec (for 1.25 seconds). d. Decelerate and return to the initial position (for 0.5 seconds). Your job is to design the polynomial $S(t)$, in terms of time $t$, for ONLY segment b. You do NOT need design the other three segments.
