College Physics
1st Edition
ISBN: 9781938168000
Author: Paul Peter Urone, Roger Hinrichs
Publisher: OpenStax College
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Textbook Question
Chapter 1, Problem 23PE
If a marathon runner averages 9.5 mi/h, how long does it take him or her to run a 26.22-mi marathon?
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Chapter 1 Solutions
College Physics
Ch. 1 - Models are particularly useful in relativity and...Ch. 1 - How does a model differ from a theory?Ch. 1 - If two different theories describe experimental...Ch. 1 - What determines the validity of a theory?Ch. 1 - Certain criteria must be satisfied if a...Ch. 1 - Can the validity of a model be limited, or must it...Ch. 1 - Classical physics is a good approximation to...Ch. 1 - When is it necessary to use relativistic quantum...Ch. 1 - Can classical physics be used to accurately...Ch. 1 - Identify some advantages of metric units.
Ch. 1 - What is the relationship between the accuracy and...Ch. 1 - Prescriptions for vision correction are given in...Ch. 1 - The speed limit on some interstate highways is...Ch. 1 - A car is traveling at a speed of 33 m/s. (a) What...Ch. 1 - Show that 1.0m/s=3.6Km/h. Hint: Show the explicit...Ch. 1 - American football is played on a 100-yd-long...Ch. 1 - Soccer fields vary in size. A large soccer field...Ch. 1 - What is the height in meters of a person who is 6...Ch. 1 - Mount Everest, at 29,028 feet, is the tallest...Ch. 1 - The speed of sound is measured to be 342 m/s on a...Ch. 1 - Tectonic plates are large segments of the Earth's...Ch. 1 - (a) Refer to Table 1.3 to determine the average...Ch. 1 - Suppose that your bathroom scale reads your mass...Ch. 1 - A good-quality measuring tape can be off by 0.50...Ch. 1 - (a) A car speedometer has a 5.0% uncertainty. What...Ch. 1 - An infant's pulse rate is measured to be 1305...Ch. 1 - (a) Suppose that a person has an average heart...Ch. 1 - A can contains 375 mL of soda. How much is left...Ch. 1 - State how many significant figures are proper in...Ch. 1 - (a) How many significant figures are in the...Ch. 1 - (a) If your speedometer has an uncertainty of 2.0...Ch. 1 - (a) A person's blood pressure is measured to be...Ch. 1 - A person measures his or her heart rate by...Ch. 1 - What is the area of a circle 3.102 cm in diameter?Ch. 1 - If a marathon runner averages 9.5 mi/h, how long...Ch. 1 - A marathon runner completes a 42.188-km course in...Ch. 1 - The sides of a small rectangular box are measured...Ch. 1 - When non-metric units were used in the United...Ch. 1 - The length and width of a rectangular room are...Ch. 1 - A car engine moves a piston with a circular cross...Ch. 1 - How many heartbeats are there in a lifetime?Ch. 1 - A generation is about one-third of a lifetime....Ch. 1 - How many times longer than the mean life of an...Ch. 1 - Calculate the approximate number of atoms in a...Ch. 1 - Approximately how many atoms thick is a cell...Ch. 1 - (a) What fraction of Earth's diameter is the...Ch. 1 - (a) Calculate the number of cells in a hummingbird...Ch. 1 - Assuming one nerve impulse must end before another...
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- In an 8.00 kmkm race, one runner runs at a steady 11.2 km/hkm/h and another runs at 14.9 km/hkm/h. How far from the finish line is the slower runner when the faster runner finishes the race? Express your answer in kilometers to three significant figures.arrow_forwardA jet airplane reaches 679./kmh on a certain flight. What distance does it cover in 6.0min? Set the math up. But don't do any of it. Just leave your answer as a math expression. Also, be sure your answer includes all the correct unit symbols.arrow_forwardIn 2015, a Japanese high-speed train set a record— traveling at 374 mph during a test run near Mt. Fuji. What is the speed in kilometers per hour (1 mi = 1609 m)? Report your answer as a whole number.arrow_forward
- A jet airplane reaches 863. km/h on a certain flight. What distance does it cover in 4.0 min? Set the math up. But don't do any of it. Just leave your answer as a math expression. Also, be sure your answer includes all the correct unit symbols.arrow_forwardMonarch butterflies belong to one of the most beautiful species of animals. To protect themselves from the cold in Canada and the United States, they fly to Mexico and the countries of Central America in the fall. If they travel an approximate distance of 3,960 km during 60 days, a) what is the speed of the butterflies in m / s b) in km / hrarrow_forwardAnne traveled from Lincoln, Nebraska, to Detroit, Michigan, a distance of 855miles. She stopped twice. In Iowa City, Iowa she stopped for 50 minutes tofill up her car with gas and grab a bite to eat. She also stopped for 40minutes in Chicago, Illinois for the same reasons. If this trip took her 14hours, what was her average driving speed?arrow_forward
- Cyclists in the United Kingdom reach speeds of 34.0 miles per hour (mi/h) on flat sections of the road. What is this speed in (a) kilometers per hour (km/h) and (b) meters per second (m/s)?arrow_forward5.00 cars pass through an intersection each second. How many cars pass the intersection in 1.00 year? There are 365.25 days in one year. Write your answer with the correct number of significant figures.arrow_forwardJazmin picks up her friend who lives in another city and they head north on a road trip .jazmin looks at a map and sees that after 2 hours of driving,they are passing mileage marker 92 on highway 105 .After driving for 12 hours, they pass. Mileage marker 542. What is jazmins average rate during the road trip?arrow_forward
- A police is driving a cop car to a suspect's home to pick him up. He drives at 59 km/h for 15 minutes and 46 km/h for 30 minutes. What was his average speed in kilometers per hour during the course of 45 minutes? Your answer should be rounded to the closest hundredth.arrow_forwardA high-tech drone flies over Miami, FL in a direction 57.3° west of north with a speed of 34.6 km/h. Three hours later, the drone suddenly shifts due north, and its speed slows to 13.6 km/h. How far (in kilometers) from Miami, FL is the drone 4.50 h after it passes over the Miami. Round your answer to 0 decimal places.arrow_forwardYou are driving home from school steadily at 97 km/hkm/h for 160 kmkm. It then begins to rain and you slow to 61 km/hkm/h instantly. You arrive home after driving 4.5 hours. How far is your hometown from school? answer using two significant figures.arrow_forward
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