Physics for Scientists and Engineers
10th Edition
ISBN: 9781337553278
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 1, Problem 30AP
(a) What is the order of magnitude of the number of micro organisms in the human intestinal tract? A typical bacterial length scale is 10−6 m. Estimate the intestinal volume and assume 1% of it is occupied by bacteria. (b) Does the number of bacteria suggest whether the bacteria are beneficial, dangerous, or neutral for the human body? What functions could they serve?
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(a) What is the order of magnitude of the number of micro organisms in the human intestinal tract? A typical bacterial length scale is 10-6 m. Estimate the intestinal volume and assume 1% of it is occupied by bacteria. (b) Does the number of bacteria suggest whether the bacteria are beneficial, dangerous, or neutral for the human body? What functions could they serve?
A population of E. coli bacteria grows exponentially with time. You believe that the mean time between divisions is t, = 26 min, and that cell death occurs on average after tm = 200 hr. The
population starts with 1000 cells. Complete parts (a) through (c).
(a) Use the equation N(t) = N, e0-m)t to predict how many cells are present after 3 hours.
The number of cells present after 3 hours is.
(Do not round until the final answer. Then round to the nearest integer as needed.)
(a) what is the average rate of change of the number of bacteria in the culture between 1 and 3 hours after the measurements begin?
(b) because the average rate of science is _ the bacterial population is decreasing at an average rate of _ bacteria per hour between one and three hours after management begins?
Chapter 1 Solutions
Physics for Scientists and Engineers
Ch. 1.1 - In a machine shop, two cams are produced, one of...Ch. 1.3 - True or False: Dimensional analysis can give you...Ch. 1.4 - The distance between two cities is 100 mi. What is...Ch. 1 - Prob. 1PCh. 1 - Prob. 2PCh. 1 - Prob. 3PCh. 1 - Prob. 4PCh. 1 - You have been hired by the defense attorney as an...Ch. 1 - A surveyor measures the distance across a straight...Ch. 1 - A crystalline solid consists of atoms stacked up...
Ch. 1 - The position of a particle moving under uniform...Ch. 1 - Prob. 9PCh. 1 - (a) Assume the equation x = At3 + Bt describes the...Ch. 1 - A solid piece of lead has a mass of 23.94 g and a...Ch. 1 - Why is the following situation impossible? A...Ch. 1 - Prob. 13PCh. 1 - Let AI represent the density of aluminum and Fe...Ch. 1 - One gallon of paint (volume = 3.78 103 m3) covers...Ch. 1 - Prob. 16PCh. 1 - (a) Compute the order of magnitude of the mass of...Ch. 1 - To an order of magnitude, how many piano tuners...Ch. 1 - Your roommate is playing a video game from the...Ch. 1 - How many significant figures are in the following...Ch. 1 - The tropical year, the time interval from one...Ch. 1 - Prob. 22PCh. 1 - Review. In a community college parking lot, the...Ch. 1 - Prob. 24PCh. 1 - Review. The ratio of the number of sparrows...Ch. 1 - Review. Prove that one solution of the equation...Ch. 1 - Prob. 27PCh. 1 - Prob. 28PCh. 1 - Prob. 29APCh. 1 - (a) What is the order of magnitude of the number...Ch. 1 - The distance from the Sun to the nearest star is...Ch. 1 - Why is the following situation impossible? In an...Ch. 1 - Bacteria and other prokaryotes are found deep...Ch. 1 - A spherical shell has an outside radius of 2.60 cm...Ch. 1 - Air is blown into a spherical balloon so that,...Ch. 1 - In physics, it is important to use mathematical...Ch. 1 - The consumption of natural gas by a company...Ch. 1 - A woman wishing to know the height of a mountain...Ch. 1 - Prob. 39CP
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