Universe: Stars And Galaxies
6th Edition
ISBN: 9781319115098
Author: Roger Freedman, Robert Geller, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 1, Problem 33Q
To determine
The age of the universe in seconds.
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If there are 3x10^7 seconds in
one year, a distance of one light
year is equal to:
9 x 10^15 m
9 x 10^13 m
9 x 10^11 m
O 9 x 10^9 m
Name
1. Seth hiked 3.5 miles each hour.
Ordered pairs were graphed of
the total distance Seth hiked. The
x-coordinate represents the total
time, in hours, Seth hiked, and the
y-coordinate represents the total
distance, in miles, he hiked. Select all
of the ordered pairs that represent-
this relationship.
(2,7)
(1,7)
(4,14)
0 (5,21)
0 (0,0)
The Earth is travelling around the sun at a speed of about 67,000 miles per hour [mph]. If it takes one year [yr] for the Earth to circle the Sun and we assume the Earth?s orbit is circular, what is the radius of the orbit in units of meters [m]? Use an appropriate SI prefix to report your answer so there are one, two, or three digits to the left of the decimal point.
Chapter 1 Solutions
Universe: Stars And Galaxies
Ch. 1 - Prob. 1QCh. 1 - Prob. 2QCh. 1 - Prob. 3QCh. 1 - Prob. 4QCh. 1 - Prob. 5QCh. 1 - Prob. 6QCh. 1 - Prob. 7QCh. 1 - Prob. 8QCh. 1 - Prob. 9QCh. 1 - Prob. 10Q
Ch. 1 - Prob. 11QCh. 1 - Prob. 12QCh. 1 - Prob. 13QCh. 1 - Prob. 14QCh. 1 - Prob. 15QCh. 1 - Prob. 16QCh. 1 - Prob. 17QCh. 1 - Prob. 18QCh. 1 - Prob. 19QCh. 1 - Prob. 20QCh. 1 - Prob. 21QCh. 1 - Prob. 22QCh. 1 - Prob. 23QCh. 1 - Prob. 24QCh. 1 - Prob. 25QCh. 1 - Prob. 26QCh. 1 - Prob. 27QCh. 1 - Prob. 28QCh. 1 - Prob. 29QCh. 1 - Prob. 30QCh. 1 - Prob. 31QCh. 1 - Prob. 32QCh. 1 - Prob. 33QCh. 1 - Prob. 34QCh. 1 - Prob. 35QCh. 1 - Prob. 36QCh. 1 - Prob. 37QCh. 1 - Prob. 38QCh. 1 - Prob. 39QCh. 1 - Prob. 40QCh. 1 - Prob. 41QCh. 1 - Prob. 42Q
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- Convert 3,000 grades/century to Mega Hertz (MHz)arrow_forwardOxygen Atoms in People. Figure 5.7 shows that oxygen makes up about 65% of the mass of a human being. A single oxygen atom has a mass of 2.66 × 10−26 kg. (a) Use this fact to estimate the number of oxygen atoms in your body. (Hint: If you know your weight in pounds, you can convert to kilograms by dividing by 2.2.) (b) Compare your answer to the number of stars in the observable universe (which is roughly 1022).arrow_forward1 million kilometers can be expressed in scientific notation as: 10x10^6 km 10x10^-6 km none of these 1x10^6 km 1x10^-6kmarrow_forward
- Suppose the Sun were somehow replaced by a star with five times as much mass. How long would the Earth year last in this last case? (hint: Newton’s version of Kepler’s 3rd Law)arrow_forwardIt is important to have an idea about the distances between and relative sizes of celestial objects in the solar system. In Part 1 we will pretend to shrink the solar system until its center piece, the Sun, is 67.3 cm in diameter. This will represent the Sun which is 1,390,000 km in diameter. The scale of our model is thus: 67.3 cm = 4.84 x 10-5 cm km Scale 1, 390, 000 km To find the size or distance between objects in centimeters for the model, simply multiply the actual size or distance in kilometers by the scale factor above. 1. Fill in following table: Quantity Actual Distance (km) Model Distance (cm) Diameter of Sun 1,390,000 Diameter of Earth 12,760 Diameter of Moon 3,480 Distance Between Earth and Sun 1.5 x 108 Distance Between Earth and Moon 384,000 Distance to Proxima Centauri 3.97 x 1013arrow_forwardCan you give me a short summary about The Order of Time. ISBN-13: 978-0241292525.arrow_forward
- The meter was redefined as a reference to Earth, then to krypton, and finally to the speed of light. Why do you think the reference point for a meter continued to change?arrow_forwardCalculate how many seconds there are in 1.0 Mars year (678 Earth days). Report your answer in scientific notation with the correct number of significant digits.arrow_forwardWhat is the number of miles in a light-year, using (see picture) mi/s as the speed of light? I know the number of seconds in a year and 365 days will help but confused on how to put it in the equation.arrow_forward
- A square with an edge 8 cm long has an area of (8cm)(8cm) = 64 cm2. What is this area in square meters? Group of answer choices 0.64 square meters 0.0064 square meters 6400 square meters 640,000 square meters Which of the following does NOT correspond to the dimension of length? Group of answer choices fathom yard kilometer parsec angstrom light-year More than one of these is not a unit of length All of these are units of lengtharrow_forwardLight travels at 2.9979 x 10^10 cm/s. How far would light travel in a year? (USE SYMBOL ^ FOR EXPONENT. ROUND OFF ANSWER TO FOUR DECIMAL PLACES)arrow_forwardThe answer for the first box is, 1808,3616, 0, 5424, 7232 (in unit of N/C). For the second box is, right, downward, 0 (no direction), left, upward. And for the third box is, 3.9, 2.0, 2.6, 7.9, 1.5 (in unit of cm)arrow_forward
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