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 6Q
To determine
The meaning of the letters RIVUXG.
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Be sure to answer all parts.
Carry out the following conversions:
(a) 1.25 light-years to miles (a light-year is an astronomical measure of the distance
traveled by light in a year, or 365 days; the speed of light is 3.00 × 10° m/s)
x 10
mi
Enter your answer in scientific notation.
(b) 27.3 yd to centimeters
x 10
cm
Enter your answer in scientific notation.
(c) 2.7 × 1010 cm/s to ft/s
X 10
ft/s
Enter your answer in scientific notation.
For the remaining questions, you need to use Figure 1.4 to obtain the necessary orders of magnitude of lengths, masses, and times.Roughly how many times longer than the mean life of an extremely unstable atomic nucleus is the lifetime of a human?
i need part b answered, I got part a correct but i tried 100K and 900K for b and both were incorrect. i don't understand how to get the correct answer. I thought (300)(3/1)=900 would be the correct way to get the answer.
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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- Rewrite the following expression in proper scientific notation as in the example at page 1. Note that here you also have to take care of the number of significant digits. (1.4088x102) (1.8775x101) (6.0110x104) (7.76)/ (2.4x10-4) (4.01x1010) (8.80x101) 3) Solve the above expression using your calculator. Round your answer to the appropriate number of significant digits. (need this)arrow_forwardFor this short response assignment, your job is to demonstrate your understanding of SI units and how they can be applied on an astronomical scale. To do this, answer each of the following with a brief explanation of the mathematics used to get there.The speed of light is 3*10^8 m/s (aka 300,000,000 meters per second). What is the speed of light in centimeters per second, kilometers per second, and miles per hour? (Hint: there are roughly 1.6 km per mile and 3600 seconds per hour) Remember to show the math; If light from the closest star to our solar system takes about 4.2 years to get to us, how far away is that star in units of Gm (aka Gigameters)? Again, explain your work.arrow_forwardYou are standing a distance x from a building with height y. If the straight line distance between you and the top of the building is 1200m and the angle between the horizontal plane and your straight line of sight is 40o. What is the height of the building and what distance are you from it?arrow_forward
- Imagine that the y-axis points north and the x-axis points east. (a) If you travel a distance r= 22km in a straight line from the origin in a direction 35 degrees south of west, what is your position in Cartesian (x,y) coordinates? (b) If you travel 6 miles due south from the origin and then turn west and travel 2 miles, how far from the origin and in what direction is your final position?arrow_forwardHi, Parts a) and b) come up as incorrect. Could you please double check your answer?arrow_forwardThe table shown gives the approximate enrollment at the University of Michigan every 50 years from 1850 to 2000. How many more students were enrolled at the University of Michigan in 2000 than in 1900? Answer in standard form and show or explain your work. Round your answer to the hundredths place. Year 1850 1900 1950 2000 Enrollment (number of students) 7.2 x 10¹ 3.7 x 10³ 2.7 x 104 3.8 x 104arrow_forward
- A car is 16 feet, 3 inches long. How long is it in meters? Use the fact that 1 inch=2.54 centim-eters to determine your answer. Explain your reasoning briefly.arrow_forwardA surveyor measures the distance across a straight river by the following method: Starting directly across from a tree on the opposite bank, he walks 100m along the riverbank to establish a baseline. Then he sights across to the tree the angle from his baseline to the tree is 35o. How wide is the river?(in meters)arrow_forwardIn astronomy, distances are often expressed in light-years. One light-year is the distance traveled by light in one year. If the distance to a star is 5.9 light-years, what is this distance in meters? (There are 365.25 days in one year.) Number i Units >arrow_forward
- Suppose that a particular artillery piece has a range RRR = 5370 yardsyards . Find its range in miles. Use the facts that 1mile=5280ft1mile=5280ft and 3ft=1yard3ft=1yard. Express your answer in miles to three significant figures.arrow_forwardWithin the Solar System, a convenient unit of measurement is the Earth-Sun distance, called an astronomical unit (AU). For bigger distances, we use the light year (LY), the distance that light travels in one year. Starting with the values you can look up in the Appendices for the speed of light and the astronomical unit, calculate how many “light minutes” there are in 1 AU.arrow_forwardHow do you calculate the miles you are getting per gallon of gasoline if you record the mileage readings from your car’s odometer each time you fill up the gas tank? Two odometer readings should be inputted, one reading is before you fill up the gas tank, and the second reading is when you refill the gas tank. The third input is the quantity of gallons of gasoline purchased when the gas tank is refilled. After inputting these 3 values, calculate and output: The miles traveled between gas refills The average miles per gallon based on the miles traveled and the amount of gasoline purchased after the time the gas tank is refilled (Use sequential structure)arrow_forward
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