Essential University Physics (3rd Edition)
3rd Edition
ISBN: 9780134202709
Author: Richard Wolfson
Publisher: PEARSON
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Textbook Question
Chapter 1, Problem 66PP
The human body contains about 1014 cells, and the diameter of a typical cell is about 10 μm Like all ordinary matter, cells are made of atoms; a typical atomic diameter is 0.1 nm.
How does the number of atoms in a cell compare with the number of cells in the body?
- a. greater
- b. smaller
- c. about the same
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REPORT SHEET
Conversion Factors
and Problem Solving
A. Rounding Off
1. Correct?
(yes/no)
Initial Number
Student's
2. Corrected
Rounded Value
(if needed)
143.63212
144
532 800
533
0.008 583 45
0.009
bi
8.
8.00
B. Significant Figures in Calculations
B.1 Multiplication and Division
Perform the following multiplication and division calculations. Give a final answer
with the correct number of significant figures:
0.1184x8.00×0.0345
bilo: to
(42.4)(15.6)
1.265
(35.56)(1.45)
(4.8)(0.56)
B.2 Addition and Subtraction
Perform the following addition and subtraction calculations. Give a final answer
with the correct number of decimal places.
13.45 mL+0.4552 mL
145.5 m+86.58 m+1045 m
245.625 g – 80.2 g
4.62 cm – 0.885 cm
One mole of Gold (Au) atom has a mass of 197 g. We know that the density of gold is 19.30 g/cm3 in room temperature. Using those numbers, answer the following questions:
a) What is the mass of a single gold atom in kg?
b) Assume that gold atoms sit in a perfect cubic crystal structure. Estimate the distance between two gold atoms in meters.
c) If we have a gold cube of 6 cm on each side, how many atoms can we fit along the edge of each side of the cube?
d) What would be the mass, in kilograms, of the gold cube we discussed in part (c) (measuring 6 cm on each side)?
A light-year (ly) is the distance light travels in one year (at speed of 2.998 ×× 108 m/sm/s ). An astronomical unit (AU) is the average distance from the Sun to Earth, 1.50 ×× 108 kmkm.1 yearyear = 3.156 ×× 107 ss.
a. How many meters are there in 6.50 lyly ?
Express your answer using three significant figures.
b. How many AUAU are there in 6.50 lyly light-year?
Express your answer using three significant figures.
Chapter 1 Solutions
Essential University Physics (3rd Edition)
Ch. 1.2 - A Canadian speed limit of 50 km/h is closest to...Ch. 1.3 - Rank the numbers according to (1) their size and...Ch. 1 - Explain why measurement standards based on...Ch. 1 - Prob. 2FTDCh. 1 - Why doesnt Earths rotation provide a suitable time...Ch. 1 - To raise a power of 10 to another power, you...Ch. 1 - What facts might a scientist use in estimating...Ch. 1 - How would you determine the length of a curved...Ch. 1 - Write 1/x as x to some power.Ch. 1 - Emissions of carbon dioxide from fossil-fuel...
Ch. 1 - In Chapter 3, youll learn that the range of a...Ch. 1 - What is meant by an explicit-constant definition...Ch. 1 - Youre asked to make a rough estimate of the total...Ch. 1 - The power output of a typical large power plant is...Ch. 1 - The diameter of a hydrogen atom is about 0.1 nm,...Ch. 1 - Use the definition of the meter to determine how...Ch. 1 - In nanoseconds, how long is the period of the...Ch. 1 - Lake Baikal in Siberia holds the worlds largest...Ch. 1 - A hydrogen atom is about 0.1 nm in diameter. How...Ch. 1 - How long a piece of wire would you need to form a...Ch. 1 - Making a turn, a jetliner flies 2.1 km on a...Ch. 1 - A car is moving at 35.0 mi/h. Express its speed in...Ch. 1 - You have postage for a 1-oz letter but only a...Ch. 1 - Prob. 22ECh. 1 - How many cubic centimeters are in a cubic meter?Ch. 1 - Prob. 24ECh. 1 - Prob. 25ECh. 1 - Highways in Canada have speed limits of 100 km/h....Ch. 1 - One m/s is how many km/h?Ch. 1 - A 3.0-lb box of grass seed will seed 2100 ft2 of...Ch. 1 - A radian is how many degrees?Ch. 1 - Convert the following to SI units: (a) 55 mi/h:...Ch. 1 - The distance to the Andromeda galaxy, the nearest...Ch. 1 - Add 3.63105 m and 2.13103 km.Ch. 1 - Divide 4.23103 m/s by 0.57 ms, and express your...Ch. 1 - Add 5.131022 cm and 6.83103 mm. and multiply the...Ch. 1 - Find the cube root of 6.4 1019 without a...Ch. 1 - Add 1.46 m and 2.3 cm.Ch. 1 - Prob. 37ECh. 1 - Prob. 38ECh. 1 - To see why its important to carry more digits in...Ch. 1 - Youve been hired as an environmental watchdog for...Ch. 1 - The average dairy cow produces about 104 kg of...Ch. 1 - How many Earths would fit inside the Sun?Ch. 1 - The average American uses electrical energy at the...Ch. 1 - Youre writing a biography of the physicist Enrico...Ch. 1 - (a) Estimate the volume of water going over...Ch. 1 - Estimate the number of air molecules in your dorm...Ch. 1 - A human hair is about 100 m across. Estimate the...Ch. 1 - Prob. 48PCh. 1 - Bubble gums density is about 1 g/cm3. You blow an...Ch. 1 - The Moon barely covers the Sun during a solar...Ch. 1 - The semiconductor chip at the heart of a personal...Ch. 1 - Estimate the number of (a) atoms and (b) cells in...Ch. 1 - When we write the number 3.6 as typical of a...Ch. 1 - Continental drift occurs at about the rate your...Ch. 1 - Youre driving into Canada and trying to decide...Ch. 1 - In the 1908 London Olympics, the intended 26-mile...Ch. 1 - An environmental group is lobbying to shut down a...Ch. 1 - If youre working from the print version of this...Ch. 1 - Estimate the area of skin on your body.Ch. 1 - Estimate the mass of water in the worlds oceans,...Ch. 1 - Express the following with appropriate units and...Ch. 1 - Prob. 62PCh. 1 - Caf Milagro sells coffee online. A half-kilogram...Ch. 1 - The world consumes energy at the rate of about 500...Ch. 1 - The volume of a sphere is given by V=43r3, where r...Ch. 1 - The human body contains about 1014 cells, and the...Ch. 1 - The human body contains about 1014 cells, and the...Ch. 1 - The human body contains about 1014 cells, and the...Ch. 1 - The human body contains about 1014 cells, and the...
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