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# hw01 - alexander(jra2623 homework 01 Turner(92510 This...

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alexander (jra2623) – homework 01 – Turner – (92510) 1 This print-out should have 6 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points The mass of the planet Saturn is about 5 . 64 × 10 26 kg and its radius 6 × 10 7 m. Calculate its density. Correct answer: 623 . 357 kg / m 3 . Explanation: Let : M = 5 . 64 × 10 26 kg and R = 6 × 10 7 m . Assuming Saturn to be a sphere (neglecting the rings), V = 4 3 π R 3 , so the density of Saturn is ρ = M V = M 4 3 π R 3 = 3 (5 . 64 × 10 26 kg) 4 π (6 × 10 7 m) 3 = 623 . 357 kg / m 3 . 002 (part 1 of 4) 10.0 points It is given that r and s are distances with unit [L], t is a time with unit [T] and θ is an angle in radians. Find the dimensions for the quantity c in the expression s = c t . 1. [ c ]=[T] 2. [ c ]=[L] 3. [ c ]=[L 2 ] 4. [ c ]=[L] [T] 5. [ c ]=[L] [T 2 ] 6. [ c ]=[T]/[L] 7. [ c ]=1/[T] 8. [ c ]=[L]/[T] correct 9. [ c ]=1/[L] 10. [ c ]=[L]/[T 2 ] Explanation: c = s t [ c ] = [ s ] [ t ] = [L] / [T] . 003 (part 2 of 4) 10.0 points Find the dimensions for the quantity c in the expression s = c t 2 .

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hw01 - alexander(jra2623 homework 01 Turner(92510 This...

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