HW01-solutions - markowitz (am45362) HW01 distler (56295) 1...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: markowitz (am45362) HW01 distler (56295) 1 This print-out should have 22 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 (part 1 of 4) 10.0 points One cubic centimeter ( 1 cm 3 ) of water has a mass of 0 . 001 kg at 25 C. Find the mass of 2 . 85 m 3 of water. Correct answer: 2850 kg. Explanation: Let : V = 2 . 85 m 3 and = . 001 kg 1 cm 3 . = m V m = V = parenleftbigg . 001 kg 1 cm 3 parenrightbigg (2 . 85 m 3 ) parenleftbigg 100 cm 1 m parenrightbigg 3 = 2850 kg . 002 (part 2 of 4) 10.0 points Assume biological substances are 95 . 1% wa- ter. Estimate the mass of a cell assuming it to be spherical with a diameter of 1 . 74 m. The volume of a sphere is 4 3 r 3 . Correct answer: 2 . 75833 10 15 kg. Explanation: Let : = 1 . 10 3 kg / m 3 and r = 0 . 87 m = 8 . 7 10 7 m . Assume 100% of the total mass: = m V m = V = 4 3 r 3 = ( 1000 kg / m 3 ) 4 3 ( 8 . 7 10 7 m ) 3 = 2 . 75833 10 15 kg . 003 (part 3 of 4) 10.0 points Estimate the mass of a human kidney if it is roughly a sphere with a radius of 4 . 01 cm. Correct answer: 0 . 270098 kg. Explanation: Let : r = 4 . 01 cm = 0 . 0401 m . Assume 100% of the total mass: m = V = 4 3 r 3 = ( 1000 kg / m 3 ) 4 3 (0 . 0401 m) 3 = . 270098 kg . 004 (part 4 of 4) 10.0 points Estimate the mass of a fly, roughly a cylinder 4 . 42 mm long and 1 . 71 mm in diameter. The volume of a cylinder is r 2 . Correct answer: 1 . 01509 10 5 kg. Explanation: Let : = 1 . 10 3 kg / m 3 , r = 0 . 855 mm = 0 . 000855 m , and = 4 . 42 mm = 0 . 00442 m . The volume is V = r 2 . Estimate 100% of the total mass: m = V = r 2 = ( 1000 kg / m 3 ) (0 . 000855 m) 2 (0 . 00442 m) = 1 . 01509 10 5 kg ....
View Full Document

Page1 / 6

HW01-solutions - markowitz (am45362) HW01 distler (56295) 1...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online