Conceptual Physics (12th Edition)
12th Edition
ISBN: 9780321909107
Author: Paul G. Hewitt
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 14, Problem 70RCQ
When you replace helium in a balloon with less-dense hydrogen, does the buoyant force on the balloon change if the balloon remains the same size? Explain.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionChapter 14 Solutions
Conceptual Physics (12th Edition)
Ch. 14 - Prob. 1RCQCh. 14 - Prob. 2RCQCh. 14 - 3. What is the cause of atmospheric pressure ?
Ch. 14 - Prob. 4RCQCh. 14 - Prob. 5RCQCh. 14 - Prob. 6RCQCh. 14 - Prob. 7RCQCh. 14 - Prob. 8RCQCh. 14 - Prob. 9RCQCh. 14 - Prob. 10RCQ
Ch. 14 - Prob. 11RCQCh. 14 - Prob. 12RCQCh. 14 - Prob. 13RCQCh. 14 - Prob. 14RCQCh. 14 - Prob. 15RCQCh. 14 - Prob. 16RCQCh. 14 - Prob. 17RCQCh. 14 - Prob. 18RCQCh. 14 - Prob. 19RCQCh. 14 - Prob. 20RCQCh. 14 - Prob. 21RCQCh. 14 - 22. What happens to the internal pressure in a...Ch. 14 - 23. Does Bernoulli’s principle refer to changes in...Ch. 14 - 24. How does faster-moving air above an airplane...Ch. 14 - Prob. 25RCQCh. 14 - Prob. 26RCQCh. 14 - Is the fluid that goes up the inside tube in a...Ch. 14 - Prob. 28RCQCh. 14 - Prob. 29RCQCh. 14 - Prob. 30RCQCh. 14 - Prob. 31RCQCh. 14 - Prob. 32RCQCh. 14 - Prob. 33RCQCh. 14 - 34. Place a card over the open top of a glass...Ch. 14 - Prob. 35RCQCh. 14 - Prob. 36RCQCh. 14 - Prob. 37RCQCh. 14 - Prob. 38RCQCh. 14 - Prob. 39RCQCh. 14 - 40. Estimate the buoyant force that air exerts on...Ch. 14 - Prob. 41RCQCh. 14 - Prob. 42RCQCh. 14 - Prob. 43RCQCh. 14 - Prob. 44RCQCh. 14 - 45. Rank the volumes of air in the glass , from...Ch. 14 - 46. Rank the buoyant forces supplied by the...Ch. 14 - 47. Rank from most to least, the amounts of lift...Ch. 14 - Prob. 48RCQCh. 14 - Prob. 49RCQCh. 14 - Prob. 50RCQCh. 14 - 51. The valve stem on a tire must exert a certain...Ch. 14 - Prob. 52RCQCh. 14 - Prob. 53RCQCh. 14 - Prob. 54RCQCh. 14 - 55. When an air bubble rises in water, what...Ch. 14 - Prob. 56RCQCh. 14 - Prob. 57RCQCh. 14 - Prob. 58RCQCh. 14 - Prob. 59RCQCh. 14 - Prob. 60RCQCh. 14 - Prob. 61RCQCh. 14 - From how deep a container could mercury be drawn...Ch. 14 - Prob. 63RCQCh. 14 - Prob. 64RCQCh. 14 - Prob. 65RCQCh. 14 - Prob. 66RCQCh. 14 - Prob. 67RCQCh. 14 - Prob. 68RCQCh. 14 - 69. Would a bottle of helium gas weigh more or...Ch. 14 - When you replace helium in a balloon with...Ch. 14 - Prob. 71RCQCh. 14 - 72. If the number of gas atoms in a container is...Ch. 14 - Prob. 73RCQCh. 14 - Prob. 74RCQCh. 14 - Prob. 75RCQCh. 14 - Prob. 76RCQCh. 14 - Prob. 77RCQCh. 14 - Prob. 78RCQCh. 14 - Prob. 79RCQCh. 14 - Prob. 80RCQCh. 14 - Prob. 81RCQCh. 14 - Prob. 82RCQCh. 14 - Prob. 83RCQCh. 14 - Prob. 84RCQCh. 14 - Prob. 85RCQCh. 14 - Why is it easier to throw a curve with a tennis...Ch. 14 - Prob. 87RCQCh. 14 - Prob. 88RCQCh. 14 - Prob. 89RCQCh. 14 - Prob. 90RCQCh. 14 - 91. What physics principle underlies these three...Ch. 14 - Prob. 92RCQCh. 14 - Prob. 93RCQCh. 14 - Prob. 94RCQCh. 14 - Prob. 95RCQCh. 14 - Prob. 96RCQCh. 14 - Prob. 97RCQCh. 14 - Prob. 98RCQCh. 14 - Prob. 99RCQCh. 14 - 100. Two identical balloons of the same volume are...Ch. 14 - Prob. 101RCQCh. 14 - Prob. 102RCQCh. 14 - Prob. 103RCQCh. 14 - Prob. 104RCQCh. 14 - Prob. 105RCQ
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- A hot-air balloon consists of a basket banging beneath a large envelope filled with hot air. A topical hot-air balloon has a total mass of 545 kg. including passengers in its basket, and holds 2.55 103 m3 of hot air in its envelope. If the ambient air density is 1.25 kg/m3, determine the density of hot air inside the envelope when the balloon is neutrally buoyant. Neglect the volume of air displaced by the basket and | passengers.arrow_forwardThe human brain and spinal cord are immersed in the cerebrospinal fluid. The fluid is normally continuous between the cranial and spinal cavities and exerts a pressure of 100 to 200 mm of H2O above the prevailing atmospheric pressure. In medical work, pressures are often measured in units of mm of H2O because body fluids, including the cerebrospinal fluid, typically have nearly the same density as water. The pressure of the cerebrospinal fluid can be measured by means of a spinal tap. A hollow tube is inserted into the spinal column, and the height lo which the fluid rises is observed, as shown in Figure P9.83. If the fluid ruses to a height of 160. mm, we write its gauge pressure as 160. mm H2O. (a) Express this pressure in pascals, in atmospheres, and in millimeters of mercury. (b) Sometimes it is necessary to determine whether an accident victim has suffered a crushed vertebra that is blocking the flow of cerebrospinal fluid in the spinal column. In other cases, a physician may suspect that a tumor or other growth is blocking the spinal column and inhibiting the flow of cerebrospinal fluid. Such conditions ran be investigated by means of the Queckensted test. In this procedure, the veins in the patients neck are compressed lo make the blood pressure rise in the brain. The increase in pressure in the blood vessels is transmitted to the cerebrospinal fluid. What should be the normal effect on the height of the fluid in the spinal tap? (c) Suppose compressing the veins had no effect on the level of the fluid. What might account for this phenomenon?arrow_forwardA 10.0-kg block of metal measuring 12.0 cm by 10.0 cm by 10.0 cm is suspended from a scale and immersed in water as shown in Figure P15.24b. The 12.0-cm dimension is vertical, and the top of the block is 5.00 cm below the surface of the water. (a) What are the magnitudes of the forces acting on the top and on the bottom of the block due to the surrounding water? (b) What is the reading of the spring scale? (c) Show that the buoyant force equals the difference between the forces at the top and bottom of the block.arrow_forward
- A spherical weather balloon is filled with hydrogen until its radius is 3.00 m. Its total mass including the instruments it carries is 15.0 kg. (a) Find the buoyant force acting on the balloon, assuming the density of air is 1.29 kg/m3. (b) What is the net force acting on the balloon and its instruments after the balloon is released from the ground? (c) Why does the radius of the balloon tend to increase as it rises to higher altitude?arrow_forwardA submarine is stranded on the bottom of the ocean with its hatch 25.0 m below the surface. Calculate the force needed to open the hatch from the inside, given it is circular and 0.450 m in diameter. Air pressure inside the submarine is 1.00 atm.arrow_forwardThe water supply of a building is fed through a main pipe 6.00 cm in diameter. A 2.00-cm-diameter faucet tap, located 2.00 m above the main pipe, is observed to fill a 25.0-L container in 30.0 s. (a) What is the speed at which the water leaves the faucet? (b) What is the gauge pressure in the 6-cm main pipe? Assume the faucet is the only leak in the building.arrow_forward
- A Hydrometer is an instrument used to determine liquid density. A simple one is sketched in Figure P9.84. The bulb of a syringe is squeezed and released to lift a sample of the liquid of interest into a tube containing a calibrated rod of known density. (Assume the rod is cylindrical.) The rod. of length L and average density 0, floats partially immersed in the liquid of density . A length h of the rod protrudes above the surface of the liquid. Show that the density of the liquid is given by =0LLh Figure P9.84arrow_forwardWe stated in Example 11.12 that a xylem tube is of radius 2.50105 m. Verify that such a tube raises sap less than a meter by finding h for it, making the same assumptions that sap's density is 1050 kg/m3, its contact angle is zero, and its surface tension is the same as that of water at 20.0°c.arrow_forwardDoes atmospheric pressure add to the gas pressure in a rigid tank? In a toy balloon? When, in general, does atmospheric pressure not affect the total pressure in a fluid?arrow_forward
- A small piece of steel is tied to a block of wood. When the wood is placed in a tub of water with the steel on top, half of the block is submerged. Now the block is inverted so that the steel is under water. (i) Does the amount of the block submerged (a) increase, (b) decrease, or (c) remain the same? (ii) What happens to the water level in the tub when the block is inverted? (a) It rises. (b) It falls. (c) It remains the same.arrow_forwardAn oil gusher shoots crude oil 25.0 m into the air through a pipe with a 0.100-m diameter. Neglecting air resistance but not the resistance of the pipe, and assuming laminar flow, calculate the gauge pressure at the entrance of the 50.0-m-long vertical pipe. Take the density of the oil to be 900 kg/m3 and its viscosity to be 1.00 (N/m2) s (or 1.00 Pa s). Note that you must take into account the pressure due to the 50.0-m column of oil in the pipe.arrow_forwardWhy is it difficult to swim under water in the Great Salt Lake?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- College PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningPhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningAn Introduction to Physical SciencePhysicsISBN:9781305079137Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar TorresPublisher:Cengage Learning
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
An Introduction to Physical Science
Physics
ISBN:9781305079137
Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
Fluids in Motion: Crash Course Physics #15; Author: Crash Course;https://www.youtube.com/watch?v=fJefjG3xhW0;License: Standard YouTube License, CC-BY