Evaluate the following commutation relations: (a) [Ly, £] (b) [Py, L;] Note: You may find useful the Jacobi identity in the formula sheet: [ÂB, Ĉ] = Â[B, Ĉ] + [‚ ĈJB.
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- 3. Which of the following is (are) correct about mixed-methods research?i. A research instrument can be employed to produce both objective measures and subjective narratives.ii. When there are discrepancies between the quantitative and qualitative sets of findings, it means there is no feasible explanation for the social phenomenon under investigation.iii. Qualitative data can be used to inform the formulation of hypotheses that can be tested via quantitative methods.iv. Mixed-methods research produces data of a higher level of quality and is therefore preferable to ‘single-method’ research whenever the budget allows. A. i, iiB. ii, iiiC. iiiD. iii, iv1. On the moon, the time, in seconds, it takes for an object to fall a distance, d, in feet, is given by the function f(d) = 1.11va. a. Determine f(5) and explain what it represents. b. The South Pole-Aitken basin on the moon is 42,768 feet deep. Determine a reasonable domain for a rock dropped from the rim of the basin.1. The floor of a rectangular building has an area of 120 square meter. The length of the floor / is 4m bigger than its width, w. Solve for I. Hint: Start with the equation of the area in terms of I. What kind of equation do you get? /= 48.11 X feet ! No, that's not the correct answer.
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