Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN: 9781133939146
Author: Katz, Debora M.
Publisher: Cengage Learning
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Chapter 1, Problem 49PQ
To determine
The number of electrons equivalent to the mass of one proton.
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Earth has a mass of 5.98*1024 kg.The average mass of the atoms that make up Earth is 40 u. How many atoms are there in Earth?
An electron has a mass of 9.11 × 10−31 kg. A proton has a mass of 1.67 × 10−27 kg. What is the mass of a proton in electron-masses?
The speed of light is 2.998 × 108 m/s. One light-year is the distance that light travels in one year. One Astronomical Unit (AU) is 1.50 × 108 km.
(a) How many meters are in 1.0 light-year?
(b) How many meters are in 1.000 light-year?
(c) How many AU are in 1.00 light-year?
(d) What is the speed of light in AU/h?
Chapter 1 Solutions
Physics for Scientists and Engineers: Foundations and Connections
Ch. 1.5 - To practice using the prefixes in Table 1.1,...Ch. 1.5 - Prob. 1.2CECh. 1.6 - In Einsteins famous equation E = mc2, m stands for...Ch. 1.6 - Prob. 1.4CECh. 1.6 - Prob. 1.5CECh. 1.7 - How many significant figures does each number...Ch. 1.7 - Prob. 1.7CECh. 1 - The average life expectancy in Japan is 81 years....Ch. 1 - If you live in the United States, you probably...Ch. 1 - Prob. 3PQ
Ch. 1 - How many cubic centimeters (cm3) are in one cubic...Ch. 1 - Prob. 5PQCh. 1 - Prob. 6PQCh. 1 - A certain pure 0.9999 gold bullion bar with a mass...Ch. 1 - In Jules Vernes novel, Twenty Thousand Leagues...Ch. 1 - The distance to the Sun is 93 miIlion miles. What...Ch. 1 - A popular unit of measure in the ancient world was...Ch. 1 - CASE STUDY On planet Betatron, mass is measured in...Ch. 1 - Use your weight in pounds to find your mass in...Ch. 1 - A garden snail named Archie, owned by Carl...Ch. 1 - As part of a biology field trip, you have taken an...Ch. 1 - Prob. 15PQCh. 1 - Prob. 16PQCh. 1 - The kilogram Standard is a circular cylinder whose...Ch. 1 - Acceleration a has the dimensions of length per...Ch. 1 - Prob. 19PQCh. 1 - Prob. 20PQCh. 1 - Prob. 21PQCh. 1 - Prob. 22PQCh. 1 - A Later in this book, you will study oscillating...Ch. 1 - Prob. 24PQCh. 1 - Prob. 25PQCh. 1 - Convert 13.7 billion yeans (the age of the...Ch. 1 - How many significant figures does 0.00130 m have?Ch. 1 - A distance with two significant figures divided by...Ch. 1 - Prob. 29PQCh. 1 - Prob. 30PQCh. 1 - Perform the following arithmetic operations,...Ch. 1 - Calculate the result for each of the following...Ch. 1 - Prob. 33PQCh. 1 - In a laboratory, a researcher fails to start a...Ch. 1 - Prob. 35PQCh. 1 - Prob. 36PQCh. 1 - Prob. 37PQCh. 1 - Prob. 39PQCh. 1 - Prob. 41PQCh. 1 - Prob. 43PQCh. 1 - Prob. 44PQCh. 1 - In 2011, artist Hans-Peter Feldmann covered the...Ch. 1 - Prob. 49PQCh. 1 - Convert the following distances into SI units....Ch. 1 - Prob. 51PQCh. 1 - Later in this book, you will learn that sound is a...Ch. 1 - Two decorative spheres are carved from the same...Ch. 1 - Prob. 54PQCh. 1 - Prob. 55PQCh. 1 - Prob. 56PQCh. 1 - During a visit to New York City, Lil decides to...Ch. 1 - Prob. 58PQCh. 1 - You are part of a team in an engineering class...Ch. 1 - Prob. 60PQCh. 1 - A unit of distance used in astronomy is the parsec...
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- What is the height in meters of a person who is 6ft 1.0 in. tall?arrow_forwardThe Scope and Scale of Physics Find the order of magnitude of the following physical quantities. (a) The mass of Earth’s atmosphere: 5.11018kg : (b) The mass of the Moon’s atmosphere: 25,000kg ; (c) The mass of Earth’s hydrosphere: 1.41021kg : (d) The mass of Earth: 5.971024kg : (e) The mass of the Moon: 7.341022kg : (f) The Earth-Moon distance (semimajor axis): 3.84108m : (g) The mean Earth-Sun distance: 1.51011m : (h) The equatorial radius of Earth: 6.38106m : (i) The mass of an electron: 9.111031kg : (j) The mass of a proton: 1.671027kg : (k) The mass of the Sun: 1.991030kg .arrow_forwardHow many times longer than the mean life of an extremely unstable atomic nucleus is the lifetime of a human? (Hint: The lifetime of an unstable atomic nucleus is on the order of 10-22 s.arrow_forward
- 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 km. 1 year = 3.156 ×× 107 s. How many meters are there in 1.70 ly? Express your answer using three significant figures. Express in scientific notation! 1.70 ly = _________________m How many AU are there in 1.70 ly light-year? Express your answer using three significant figures. Express in scientific notation! 1.70 ly = _________________AUarrow_forwardThe mass of a newborn baby’s brain has been found to increase by about 1.6 mg per minute. (a) How much does the brain’s mass increase in one day? (b) How much time does it take for the brain’s mass to increase by 0.0075 kg?arrow_forwardA light-year is the distance light travels in one year at speed =2.998*10^8m/s a) How many inches are there in 1.00 light-year? (b) The parsec is an astronomical unit of length approximately equal to 3.08×1016 m. How many light-years are there in 1.00 parsec?arrow_forward
- One molecule of water (H2O) contains two atoms of hydrogen and one atom of oxygen.A hydrogen atom has a mass of 1.0 u and an atom of oxygen has a mass of 16 u, approximately. (a) What is the mass in kilograms of one molecule of water? (b) How many molecules of water are in the world’s oceans, which have an estimated total mass of 1.4 =1021 kg?arrow_forwardWhat is the value of n+r/(2.000) 2, written with the correct number of significant figures? O 3.92699 O 3.9269 O 3.9270 O 3.927 O 3.93arrow_forwardA person walks 4 m to the park, then he walks 8200 km in the park then he returns back to home after grocery shopping and covers 720 cm, how much total distance that person covers in m?arrow_forward
- The quantity p = 3.14159c is a number with no dimensions, since it is a ratio of two lengths. Describe two or three other geometrical or physical quantities that are dimensionless.arrow_forwardThe distance to the Andromeda Galaxy is estimated at about 2 x 106 light years. A light year is the distance traveled by light in one year; if the speed of light is 3 x 108 m/s, about how far is it from our galaxy to Andromeda.arrow_forward1) The units for energy are kgm^2/s^2. What units must the constant A have in the following equation,assuming E stands for energy, M for mass, L for length, and T for time? E=AL^2 M^2 T^-3 a) s/kg b) s^2/kg c) s/kg^2 d) s/m times kg e) s times m/s^2arrow_forward
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