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Homework 1

# Homework 1 - lim(kl9356 Physics 1710 Homework 1...

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lim (kl9356) – Physics 1710 Homework 1 – Weathers – (17104) 1 This print-out should have 9 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 5 . 64 × 10 26 kg and its radius is 6 × 10 7 m. Calculate its density. Answer in units of kg / m 3 . 002 10.0 points This problem shows how dimensional analysis helps us check and sometimes even find a formula. A rope has a cross section A = 10 . 7 m 2 and density ρ = 2150 kg / m 3 . The “linear” density of the rope μ , defined to be the mass per unit length, can be written in the form μ = ρ x A y . Based on dimensional analysis, determine the powers x and y by choosing an expression below. 1. μ = A ρ 2 2. μ = 1 ρ A 3. μ = A 2 ρ 4. μ = ρ A 5. μ = 1 ρ A 2 6. μ = A 2 ρ 2 7. μ = ρ A 2 8. μ = ρ A 2 9. μ = ρ A 10. μ = A ρ 003 10.0 points A light year is the unit of distance that light, with a speed of 2 . 99792 × 10 8 m / s, travels in one year.

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Homework 1 - lim(kl9356 Physics 1710 Homework 1...

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