Physics Measurements Level: High School
A SUV starts from rest and accelerates at 1.8 m/s2 for 120 s . It then moves at a constant speed for 2400 S . It then decelerates at 2.5 m/s2 until it stops .a) What is the velocity during the constant speed portion of his drive .
b) How long did it take the SUV to stop .
c) How far did the SUV travel during each portion of the drive and what is the total distance traveled ?
Physics Properties Of Matter Level: High School
A collapsible plastic bag contains a glucose solution . If the average gauge pressure in the vein is 1.33 x 10^3 Pa , what must the minimum height of the bag in order to infuse glucose into the vein ? Assume the specific gravity of the solution is 1.02 .
Physics Properties Of Matter Level: High School
Hooker’s law Young’s modulus
If the elastic limit of steel is 5.0 x 10^8 Pa , determine the minimum diameter a steel wire can have if it is to support a 70 kg circus performed without its elastic limit being exceeded .
Physics Properties Of Matter Level: High School
Archimedes , Bernoulli’s Principle
What force on the plunger would be needed to push fluid into a vein where the gauge pressure is 17.8 mm-Hg ? Answer for the instant just before the fluid starts to move .What force on the plunger would be needed to push fluid into a vein where the gauge pressure is 17.8 mm-
(a) How high should the pressure head be if water is to come from a faucet at a speed of 7.33 m/s ? Ignore viscosity .
Physics Properties Of Matter Level: High School
A 2.47 N force is applied to the plunger of a hypodermic needle . If the diameter of the plunger is 1.11 cm and that of the needle 0.196 mm , with what force does the fluid leave the needle ?
Physics Properties Of Matter Level: High School
Hydrostatic Pressure
Water at a gauge pressure of P = 3.77 atm at street level flows into an office building at a speed of 0.625 m/s through a pipe 5.19 cm in diameter . The pipes taper down to 2.78 cm in diameter by the top floor , h = 18.1 m above (see figure at “click here” ) Calculate the flow velocity and the gauge pressure in such a pipe on the top floor . Assume no branch pipes and ignore viscosity .
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 .