Physics Properties Of Matter Level: High School
Bernoulli’s Principle
If wind blows at 27.8 m/s over you house , what is the net force on the roof if its area is 237 m^2 ?
Physics Properties Of Matter Level: High School
Archimede’s Principle
A 2.70 kg piece of wood (specific gravity = 0.50 ) floats on water . What minimum mass of lead , hung from it by a string , will cause it to sink ?
Physics Properties Of Matter Level: High School
A 70.3 kg person has an apparent mass of 48.7 kg (because of buoyancy) when standing in water that comes up to the hips. Estimate the mass of each leg . Assume the body has SG = 1.00
Physics Properties Of Matter Level: High School
A spherically shaped balloon has a radius of 9.54 m , and a filled with helium, How large a cargo can it lift , assuming that the skin and structure of the balloon have a mass of 978 kg ? Neglect the buoyant force on the cargo volumes itself .
Physics Properties Of Matter Level: High School
Determine the water gauge pressure at a house at the bottom of a hill fed by a full tank of water h = 5.05 m deep and connected to the house by a pipe that is L = 112 m long at an angle of f AE = 58.7 degree from the horizontal (see the figure at “click here” )How high would the water shoot if it came vertically out of a broken pipe in front of the house ?
Neglect turbulence , and frictional and viscous effects .
Physics Properties Of Matter Level: High School
The gauge pressure in each of the four tires of an automobile is 232 kPa . If each tire has a “footprint” of 208 cm^2 , Calculate the mass of the car .
Physics Properties Of Matter Level: High School
Calculate the total force of the atmosphere acting on the top of a table that measures 1.52 m 2.77 m .a) What is the total force of the atmosphere acting upward on the underside of the table ?
Physics Properties Of Matter Level: High School
If 5.75 liter of antifreeze solution (specific gravity = 0.800 ) is added to 3.95 liter of water to make a 9.70 liter mixture , what is the specific gravity of the mixture ? Assume the water is at a temperature of 4 degree C .
Physics Properties Of Matter Level: High School
Bernoulli’s Principle
An airplane flies on a level path . There is a pressure difference of 520 Pa between the lower and upper surface of the wings . The area of each wing surface is about 150 m^2 . The air moves below the wings at a speed of 81.5 m/s . a) Estimate the weight of the plane . b) Estimate the air speed above the wings .
Physics Properties Of Matter Level: High School
Bernoulli’s Principle
a)Use Bernoulli’s equation to estimate the upward force on an airplane’s wing if the average flow speed is 193 m/s above the wing and 162 m/s below the wing . The density of the air is 1.2 kg/m^3 and the area of each wing surface is 25 m^2 .
b) Is the force upward or downward ?
Physics Properties Of Matter Level: High School
Equation of Continuity
A nozzle of inner radius 1.05 mm is connected to a hose of inner radius 7.95 mm . The nozzle shoots out water moving at 25.4 m/s . a) At what speed is the water in the hose moving ? b) What is the volume flow rate ? c) What is the mass flow rate ?
Physics Properties Of Matter Level: High School
Archimedes’s Principle
A piece of metal is released under water . The volume of the metal is 60.7 cm^3 and its specific gravity is 4.6 . What is its initial acceleration ? ( Note : When v = 0 , there is no drag force )
Physics Properties Of Matter Level: High School
Archimedes’s Principle
a) What is the buoyant force on 0.70 kg of ice floating freely in liquid water ?
b) What is the buoyant force on 0.70 kg of ice that is held completely submerged under water ?
Physics Properties Of Matter Level: High School
Estimate the average blood pressure in a person’s foot , if the foot is 1.38 m below the aorta , where the average blood pressure is 105 mm Hg . For the purposes of this estimate , assume the blood isn’t flowing .
Physics Properties Of Matter Level: High School
A manometer using oil (density 0.89 g/cm^3) as a fluid is connected to an air tank . Suddenly the pressure in the tank increases by 0.77 cm Hg .a) By how much does the fluid level rise in the side of the manometer that is open to the atmosphere ?
b) What would your answer be if the manometer used mercury (Hg = 13.6 g/cm^3 ) instead ?
