Homework 01

# Homework 01 - zakaria(mmz255 – Homework 01 – Yao...

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Unformatted text preview: zakaria (mmz255) – Homework 01 – Yao – (58180) 1 This print-out should have 24 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points Given 1 inch ≡ 2 . 54 cm and 1 foot ≡ 12 inches, how many square centimeters are in 1 . 63 ft 2 ? 1. . 00175452 cm 2 2. . 0534777 cm 2 3. . 00445647 cm 2 4. 1514 . 32 cm 2 5. . 876342 cm 2 6. 49 . 6824 cm 2 7. 36 . 3817 cm 2 8. 126 . 193 cm 2 002 10.0 points In May 1998, forest fires in southern Mexico and Guatemala spread smoke all the way to Austin. Those fires consumed forest land at a rate of 22400 acres/week. On the average, how many square meters of forest are burned down every minute? An acre is an area equivalent to that of a rectangle 60 . 5 yd wide and 80 yd long. There are 36 inches in one yard. There are 2.54 cm in one inch. Answer in units of m 2 / min. 003 10.0 points One cubic meter (1.0 m 3 ) of aluminum has a mass of 2700 kg, and a cubic meter of iron has a mass of 7860 kg. Find the radius of a solid aluminum sphere that has the same mass as a solid iron sphere of radius 4 . 75 cm. Answer in units of cm. 004 10.0 points A creature moves at a speed of 4 . 58 furlongs (not a very common unit of speed). If 1.0 furlong = 220 yards, 1 fortnight = 14 days, 1 yard = 0.9144 meter, and 1 day = 86400 sec, find the speed of the creature (which is probably a snail). 1. 27539 m / s 2. 23026 . 1 m / s 3. 3 . 08456 × 10- 6 m / s 4. . 149293 m / s 5. 1 . 33289 × 10 9 m / s 6. . 000761698 m / s 7. 6 . 80045 × 10 6 m / s 005 10.0 points Chuck drove 35 mi from Austin to San Mar- cos in 40 min, stopped 30 min for a ham- burger, and then drove 45 mi to San Antonio...
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## This note was uploaded on 06/05/2011 for the course PHYS 303K taught by Professor Niu during the Spring '08 term at University of Texas.

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Homework 01 - zakaria(mmz255 – Homework 01 – Yao...

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