PHYS 121 Chapter Notes - Chapter 13: Capillary Action, Blaise Pascal, Surface Tension

43 views2 pages

raspberrywhale853

22 Oct 2017

School

Department

Course

Professor

For unlimited access to Textbook Notes, a Class+ subscription is required.

Document Summary

The ratio of force to the area over which that force is distributed. The pressure a liquid exerts depends on its depth. The pressure of a liquid also depends on the density of liquid. The denser the liquid, the greater the liquid pressure. When liquid presses against a surface, there is a net force that is perpendicular to the. Total pressure of a liquid is weight density multiplied by depth plus the pressure of the atmosphere surface. Forces against the bottom are greater than the downward forces against the top producing. What makes an object sink or float (13. 5) The relationship between buoyancy and displaced liquid was first discovered in the 3rd century by the greek scientist archimedes. An immersed object is buoyed up by a force equal to the weight of the fluid it displaces. Whether an object will sink or float in a liquid depends on how the buoyant force.

Related Questions

Archimedes’ Principle states that the buoyant force on an object partially or fully submerged in a fluid is equal to the weight of the fluid that the object displaces. Thus, for an object of density floating partly submerged in a fluid of density , the buoyant force is given by

where g is the acceleration due to gravity and A(y) is the area of a typical cross-section of the object. The weight of the object is given by,

Show that the percentage of the volume of the object above the surface of the liquid is

lavenderdolphin577

where 'g' is the acceleration due to gravity and is the area of a typical cross-section of the object (see the figure). The weight of the object is given by

Show that the percentage of the volume of the object above the surface of the liquid is

$A (y)$

copperbuffalo244

Archimedes’ Principle states that the buoyant force on an object partially or fully submerged in a fluid is equal to the weight of the fluid that the object displaces. Thus, for an object of density ρ0ρ0 floating partly submerged in a fluid of density ρfρf, the buoyant force is given by

where g is the acceleration due to gravity and A(y) is the area of a typical cross-section of the object (see the figure). The weight of the object is given by

(a) Show that the percentage of the volume of the object above the surface of the liquid is .

(b) The density of ice is and the density of seawater is . What percentage of the volume of an iceberg is above water?

(d) A sphere of radius and having negligible weight is floating in a large freshwater lake. How much work is required to completely submerge the sphere? The density of the water is .