old 1 exam - oldmidterm 01 NOORANI, ZOHEB Due: Feb 11 2008,...

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oldmidterm 01 – NOORANI, ZOHEB – Due: Feb 11 2008, 4:00 am 1 Question 1, chap 1, sect 5. part 1 of 1 10 points A newly discovered Jupiter-like planet has an average radius 11 . 1times that of the Earth and a mass 316 times that of the Earth. Calculate the ratio of new planet’s mass density to the mass density of the Earth. Answer in units of . Question 2, chap 1, sect 5. part 1 of 1 10 points A piece of wire has a density of 9 . 4 g / cm. What is the mass of 11 . 2 cm of the wire? Answer in units of g. Question 3, chap 1, sect 6. part 1 of 1 10 points Identify the equation below which is dimen- sionally incorrect . A, x, y and r have units of length. k here has units of inverse length. v 0 and v have units of velocity. a and g have units of acceleration. ω has units of inverse time. t is time, m is mass, V is volume, ρ is density, and F is force. 1. F = m ω 2 r 2. v = ± ω r A 2 - x 2 3. t = - v 0 + R v 2 0 + 2 a x a + v 2 a 2 t 4. v = r 2 g y + ± r F m 5. F = m g b 1 + v r g B 6. v 0 = r v 2 - 2 a x 7. g = F m + ρ m g V 8. y = A cos( k x - ω t ) Question 4, chap 1, sect 99. part 1 of 1 10 points Two airplanes leave an airport at the same time. The velocity of the ±rst airplane is 660 m / h at a heading of 60 . 5 . The velocity of the second is 580 m / h at a heading of 122 . How far apart are they after 1 . 8 h? Answer in units of m. Question 5, chap -1, sect -1. part 1 of 2 10 points The graph below shows the measurement and accuracy of Jill riding a bicycle at a con- stant speed on a country path. 0 2 4 6 8 10 12 14 16 18 20 22 24 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 Distance vs Time Time (minutes) Distance (meters) Jill has been riding for 15 min ± 1 . 95 min. She has gone a distance of 66 m ± 9 . 9 m. Estimate her speed. Answer in units of m / min. Question 6, chap -1, sect -1. part 2 of 2 10 points What is the uncertainty in her speed, as calculated in Part 1? Answer in units of m / min. Answer within a tolerance of ± 8 percent. Question 7, chap 2, sect 1. part 1 of 2 10 points You drive a car 8 h at 45 km / h, then 8 h at
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oldmidterm 01 – NOORANI, ZOHEB – Due: Feb 11 2008, 4:00 am 2 63 km / h. What is your average velocity? Answer in units of km
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old 1 exam - oldmidterm 01 NOORANI, ZOHEB Due: Feb 11 2008,...

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