Physics > QUESTIONS & ANSWERS > PHYS 1101002 (Online) HW 01_F15 (Intro) questions with answers .University of North Carolina, (All)
PHYS 1101002 (Online) HW 01_F15 (Intro) questions with answers .University of North Carolina, Charlotte
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The Expert TA | Humanlike Grading, Automated! Class Management | Help PHYS 1101002 (Online) HW 01_F15 (Intro) Nafsi, Mohamed [email protected] Problem 1: Answer the following questions us... ing the following table of base quantities, derived quantities and units. Use dimensional analysis to guide your thinking. Part (a) Using dimensional analysis, determine the units of the quantity Δt. Select the single best answer. Correct Answer Student Answer Final Grade s s 100% Grade Detail Correct Student Feedback Final Answer Credit 100% Submission Detail Answer Hints Feedback Totals 1 s 0% 0% 0% 0% Totals 0% 0% 0% 0% Part (b) Which of the following will have units of meters? Select all that apply. Correct Answer Student Answer Final Grade 1/2a(Δt)2, vΔt 1/2a(Δt)2, vΔt 100% Grade Detail Correct Student Feedback Final Answer Credit 100% Submission Detail Answer Hints Feedback Totals 1 1/2a(Δt)2, vΔt 0% 0% 0% 0% Totals 0% 0% 0% 0% Part (c) Are the units of the formula v2 = 2ar dimensionally consistent? Select the single best answer. Correct Answer Student Answer Final Grade yes – both v2 and 2ar have units of m2/s2 yes – both v2 and 2ar have units of m2/s2 100% Grade Detail Correct Student Feedback Final Answer Credit 100% Submission Detail Answer Hints Feedback Totals 1 yes – both v2 and 2ar have units of m2/s2 0% 0% 0% 0% Totals 0% 0% 0% 0% Part (d) Are the units of the formula ma = mv2/2 dimensionally consistent? Select the single best answer. Correct Answer Student Answer Final Grade no – ma has units of kg•m/s2 and 1/2mv2 has units of kg•m2/s2 no – ma has units of kg•m/s2 and 1/2mv2 has units of kg•m2/s2 100% Grade Detail Correct Student Feedback Final Answer Credit 100%12/23/2016 The Expert TA | Humanlike Grading, Automated! https://ust35nc.theexpertta.com/Common/GradeSheetGradeReport.aspx?z=1&eid=1800&aid=11802 2/11 Submission Detail Answer Hints Feedback Totals 1 no – ma has units of kg•m/s2 and 1/2mv2 has units of kg•m2/s2 0% 0% 0% 0% Totals 0 [Show More]
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