CONCEPTUAL PHYSICS-W/PRACTICING PHYSICS
9th Edition
ISBN: 9780321052025
Author: Hewitt
Publisher: PEARSON
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Concept explainers
Question
Chapter 19, Problem 34A
To determine
To Explain: The reason the stones hurt the feet less when a person steps in deep water.
Expert Solution & Answer
Explanation of Solution
Introduction:
Buoyant force: The force which is exerted by a fluid on the body is a buoyant force. It is the difference between the weight of an object in space and the weight of an object immersed in a fluid.
When a person goes inside water, a force starts acting on the body which is known as buoyant force. The buoyant force opposes the gravitational force. Due to buoyant force,the effect of gravitational force on the body starts decreasing and hence the body starts feeling lighter. Since the weight of the body exerted on stones becomes less, so the force on feet will also become less and cause less pain on the feet.
Chapter 19 Solutions
CONCEPTUAL PHYSICS-W/PRACTICING PHYSICS
Ch. 19 - Distinguish between pressure and force.Ch. 19 - What is the relationship between liquid pressure...Ch. 19 - a. By how much does the water pressure on a...Ch. 19 - How does water pressure 1 meter below the surface...Ch. 19 - If you immerse a tin can with a small hole in it...Ch. 19 - Why does the buoyant force act upward for an...Ch. 19 - How does the buoyant force that acts on a fish...Ch. 19 - Why does the buoyant force on submerged objects...Ch. 19 - How does the volume of a completely submerged...Ch. 19 - When an object is said to be immersed in water,...
Ch. 19 - What is the mass of 1 liter of water in kilograms?...Ch. 19 - a. Does the buoyant force on a submerged object...Ch. 19 - When the buoyant force on a submerged object is...Ch. 19 - When the buoyant force on a submerged object is...Ch. 19 - When the buoyant force on a submerged object is...Ch. 19 - Prob. 16ACh. 19 - Does the buoyant force on a floating object depend...Ch. 19 - What is the buoyant force that acts on a 100-ton...Ch. 19 - According to Pascals principle, what happens to...Ch. 19 - When the pressure in a hydraulic press is...Ch. 19 - Calculate the amount of pressure you experience...Ch. 19 - Calculate the water pressure at the base of Hoover...Ch. 19 - Calculate the water pressure in the pipes at the...Ch. 19 - An 8.6-kg piece of metal displaces 1 liter of...Ch. 19 - A 4.7-kg piece of metal displaces 0.6 liter of...Ch. 19 - Stand on a bathroom scale and read your weight....Ch. 19 - Which is more likely to hurt—being stepped on by...Ch. 19 - Why are persons who are confined to bed less...Ch. 19 - The sketch shows a reservoir that supplies water...Ch. 19 - Prob. 30ACh. 19 - In a deep dive, a whale is appreciably compressed...Ch. 19 - Which teapot holds more liquid?Ch. 19 - What physics principle accounts for the...Ch. 19 - Prob. 34ACh. 19 - If liquid pressure were the same at all depths,...Ch. 19 - If a 1-L container is immersed halfway in water,...Ch. 19 - How much force is needed to push a nearly...Ch. 19 - Why will a volleyball held beneath the surface of...Ch. 19 - A barge filled with scrap iron is in a canal lock....Ch. 19 - Would the water level in a canal lock go up or...Ch. 19 - A ship sailing from the ocean into a fresh-water...Ch. 19 - Suppose you have two life preservers that are...Ch. 19 - When the block of wood is placed in the beaker,...Ch. 19 - When an ice cube in a glass of water melts, does...Ch. 19 - In the hydraulic arrangement shown, the larger...Ch. 19 - Hydraulic devices multiply forces. Why does this...Ch. 19 - Which produces more pressure on the ground, an...Ch. 19 - A hole of area 12cm2 is made in the bottom of a...Ch. 19 - Prob. 49ACh. 19 - A dike in Holland springs a leak through a hole of...Ch. 19 - When a 1.8-kg wrench is suspended in water from a...Ch. 19 - A 13.5-kg block of metal displaces 5 liters of...Ch. 19 - Phil can support 100 N of iron =78,000kg/m3 in...Ch. 19 - A 1-kg rock suspended above water weighs 10 N....Ch. 19 - A merchant in Katmandu sells you a solid gold...Ch. 19 - A prospector desires to know if a nugget is pure...Ch. 19 - Consider a friend of mass 100 kg who can just...Ch. 19 - A gravel barge, rectangular in shape, is 4 m wide...Ch. 19 - A rectangular barge 5 m long and 2 m wide floats...Ch. 19 - A circus elephant weighing 18,800 N is taken on...Ch. 19 - In the hydraulic pistons shown in the sketch, the...Ch. 19 - Try to float an egg in water. Then dissolve salt...Ch. 19 - Punch a couple of holes in the bottom of a...Ch. 19 - Make a Cartesian diver like the one shown below....
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