Physics Laboratory Experiments
8th Edition
ISBN: 9781285738567
Author: Jerry D. Wilson, Cecilia A. Hernández-Hall
Publisher: Cengage Learning
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Chapter 21, Problem 5ASA
Describe how the density of an object less dense than water can be determined using Archimedes’ principle. How about the density of a liquid?
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Chapter 21 Solutions
Physics Laboratory Experiments
Ch. 21 - Prob. 1ASACh. 21 - Show that the buoyant force is given by Fb = fgVf...Ch. 21 - Give the conditions on densities that determine...Ch. 21 - Distinguish between density and specific gravity,...Ch. 21 - Describe how the density of an object less dense...Ch. 21 - Why is it important to make certain that no air...Ch. 21 - In Part B, the string will cause error. When does...Ch. 21 - Discuss the situation that occurs when an object...Ch. 21 - (a) Explain how a submarine is caused to submerge...Ch. 21 - A block of wood floats in a beaker of water....
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- Explain how the density of air varies with altitude.arrow_forwardWhat fraction of an iceberg floating in the ocean is above sea level? Assume the density of the iceberg is 917 kg/m3.arrow_forwardWhat force must exerted on the master cylinder of a hydraulic lift to support the weight of a 2000-kg car (a large car) resting on a second cylinder? The master cylinder has a 2.00-cm diameter and second cylinder has 24.0-cm diameter.arrow_forward
- A straightforward method of finding the density of an object is to measure its mass and then measure its volume by submerging it in a graduated cylinder. What is the density of a 240-g rock that displaces 89.0 cm3 of water? (Note that the accuracy and practical applications of this technique are more limited than a variety of others that are based on Archimedes' principle.)arrow_forwardBuoyant Forces and Archimedes Principle A table-tennis ball has a diameter of 3.80 cm and average density of 0.084 0 g/cm3. What force is required to hold it completely submerged under water?arrow_forwardPlace two cans of soft drinks, one regular and one diet, in a container of water. You will find that the diet drink floats while the regular one sinks. Use Archimedes principle to devise an explanation. Broad Hint: The artificial sweetener used in diet drinks is less dense I than sugar.arrow_forward
- Dry air is primarily composed of nitrogen. In a classroom demonstration, a physics instructor pours 2.00 L of liquid nitrogen into a beaker. After the nitrogen evaporates, how much volume does it occupy if its density is equal to that of the dry air at sea level? Liquid nitrogen has a density of 808 kg/m3.arrow_forwardThe density of lead is greater than iron, and both metals are denser than water. Is the buoyant force on a solid lead object (a) greater than, (b) equal to, or (c) less than the buoyant force acting on a solid iron object of the same dimensions?arrow_forwardGauge pressure in the fluid surrounding an infant's brain may rise as high as 85.0 mm Hg (5 to 12 mm Hg is normal), creating an outward force large enough to make the skull grow abnormally large. (a) Calculate this outward force in newtons on each side of an infant's skull if the effective area of each side is 70.0 cm2. (b) What is the net force acting on the skull?arrow_forward
- (Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) 42. Pistons are fitted to two cylindrical chambers connected through a horizontal tune to form a hydraulic system. The piston chambers and the connecting tube are Filled with an incompressible fluid. The cross-sectional areas of piston 1 and piston 2 are A1and A2, respectively. A force Ffis excited on piston 1. Rank the resultant force F2on piston 2 that results from the combinations of F1 A 1 and A2 given from greatest to smallest. If any of the combinations yield the same force, give them the same ranking. (a) F1= 2.0 N; A1 = 0.5 m2; and A2= 1.0 m2 (b) Fl= 1.0 N; A1= 0.5 m2; and A2 = 0.25 m2. (c) F1= 1.0 N; A1= 1.0 m2; and A2= 2.0 m2. (d) F1 = 2.0 N; A1= 0.25 m2; and A2 = 1.0 m2. (e) F1 = 2.0 N; A1= 0.25 m2; and A2 = 0.5 m2 (f) F1 = 1.0 N; A1 = 1.0 m2; and A2= 0.5 m2.arrow_forwardCalculate the average pressure exerted on the palm of a shot-putter's hand by the shot if the area of contact is 50.0 cm2 and he exerts a force of 800 N on it. Express the pressure in N/m2 and compare it with the 1.00106 Pa pressures sometimes encountered in the skeletal system.arrow_forwardSuppose the master cylinder in a hydraulic system is at a greater height than the slave cylinder. Explain how this will affect the force produced at the slave cylinder.arrow_forward
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Fluids in Motion: Crash Course Physics #15; Author: Crash Course;https://www.youtube.com/watch?v=fJefjG3xhW0;License: Standard YouTube License, CC-BY