Physics Properties Of Matter Level: High School
Solid (Bulk Modulus )
The femur is a bone in the leg whose minimum cross-sectional area is about 4.1 10-4 m2 . A compressional force in excess of 6.3 104 N will fracture this bone .a) Find the maximum stress that this bone can withstand .
b) What is the strain that exists under a maximum-stress condition ?
Physics Properties Of Matter Level: High School
Solids (Shear Modulus)
A copper cube , 0.32 m on a side , is subjected to two shearing forces, each of magnitude F = 5.5 106 N .Find the angle , which is one measure of how the shape of the block has been altered by shear deformation .
Physics Properties Of Matter Level: High School
Solids (Young’s Modulus)
A tow truck is pulling a car out of a ditch by means of a steel cable that is 9.6 m long and has a radius of 0.50 cm . When the car just begins to move , the tension in the cable is 730 N . How much has the cable stretched ?
Physics Properties Of Matter Level: High School
Gas, Charles’s Law
The temperature of an ideal gas increases from 2 degree C to 4 degree C while remaining at constant pressure. What happens to the volume of the gas ? Which of the following statements are true ?a) It increases slightly
b) It increases to twice its original volume
c) It decreases slightly
d) it decreases half its original value
e) it does not change at all
Physics Properties Of Matter Level: High School
Pressure Exerted by a Gas
A sealed cubical container 18.7 cm on a side contains five times Avogadro’s number of molecules at a temperature of 20.0 degree C . Find the total force (in Newton’s) exerted by the gas on one of the walls of the container .a) 6.51 x 10^4
b) 8.14 x 10^4
c) 1.03 x 10^5
d) 1.27 x 10^5
e) 1.59 x 10^5
Physics Properties Of Matter Level: High School
Pressure
On an airplane flight , you look out the window of the jet and wonder about the forces exerted on the window . Suppose the air outside the window moves with a speed of approximately 147 m/s shortly after takeoff , and that the air inside the plane is at atmospheric pressure . If the window has a 23.5 cm by 42.5 cm rectangular shape , Calculate the net force (in Newton’s) exerted on the window by air pressure .a) 7.13 x 10^2
b) 8.91 x 10^2
c) 1.11 x 10^3
d) 1.39 x 10^3
e) 1.74 x 10^3
Physics Properties Of Matter Level: High School
Pressure
At ground level , you get into an elevator with a glass of water that is ¾ filled . You push the button for the 4th floor and the elevator moves upward with constant acceleration . During this period of acceleration , how does the pressure on the bottom of the glass compare to the pressure when the elevator was at rest , Which of the following statements are true ? (Give ALL correct answers : B, AC, BCD…. Or None) .a) Pressure is the same
b) Pressure is less
c) Pressure is zero
d) It depends on the depth of the water in the glass
e) Pressure is greater
Physics Properties Of Matter Level: High School
Archimedes’s Principle
An object weighing 313 N in air is immersed in water after being tied to a string connected to a balance . The scale now reads 282 N . Immersed in a less dense unknown liquid ,the object weighs 296 N . Calculate the density of the unknown liquid (in kg/m^3)a) 336.3
b) 380.1
c) 429.5
d) 485.3
e) 548.4
Physics Properties Of Matter Level: High School
Archimedes’s Principle
Imagine that you have a solid cube made of Compound Y . You put the cube into a beaker filled with water . The cube floats to the top of the water and remains there , at rest , with the top quarter of the cube sticking out of the water . Which of the following statements are true ?a) The density of Compound Y must be equal to 750 kg/m^3
b) The buoyant force on the cube is equal to its own weight
c) The cube of Compound Y weighs the same as a cube of water of the same size
d) The substance must be more dense than water .
e) The cube displaces an amount of water less than its own volume .
Physics Properties Of Matter Level: High School
Hydrostatic Pressure
A very tall container (height = 125 cm)contains mercury up to a certain depth 78 cm , and the rest of the container is filled with alcohol . What is the absolute pressure (in atm) at the bottom of the container ? (Densities in kg/m^3 : mercury (13600) , water (1000) ,oil (920, alcohol(800)).a) 1.06
b) 1.32
c) 1.65
d) 20.7
e) 2.58
Physics Properties Of Matter Level: High School
Archimedes’s Principle
Imagine that you have a solid cube made of Material X, You put the cube into a beaker filled with water. The cube sinks to the bottom of the beaker and sits there , at rest , on the bottom . Which of the following statements are true ?a) The buoyant force on the cube is equal to its own weight .
b) The cube displaces an amount of water less than its own weight .
c) The cube of Material X weighs more than a cube of water the same size .
d) The normal force exerted by the bottom of the beaker on the cube is equal to the weight (in air) of the cube .
e) The substance must have the same density as water .
Physics Properties Of Matter Level: High School
Archimedes’s Principle
A piece of lead shaped like a hockey puck is floating in a mercury bath . The lead has a diameter of 9 cm and height of 2.9 cm . How deep below the surface of the mercury (in cm) is the bottom of the lead puck ? (Densities in kg/m^3 : mercury (13600), lead (11300) , silver (10500) , iron (7860))a) 2.41
b) 2.72
c) 3.08
d) 3.48
e) 3.93
Physics Properties Of Matter Level: High School
Archimedes’s Principle
Jason has bought a ring , and wishes to confirm that it is made of silver . The ring weighs 70.0 g and Jason heats it up to 87.5 degree C . He then places it in a glass that contains 255 mL of water at room temperature (23 degree C) . The full glass weighs 330 g . The final temperature after thermal equilibrium is reaches is 24.0 degree C . What is the ring made out of ? ( C silver = 234 JkgK-1 , C nickel = 444 JkgK-1, C paladin = 244 JkgK – 1 ,density of water = 100 kg/m3,10Cm^3 = 1 L )
Physics Properties Of Matter Level: High School
Gas
One way to cool a gas is to let it expand . If a gas at an initial pressure of 44.1 atm and an initial temperature of 27.3 degree C is allowed to expand to 17 times its original volume and reaches a final pressure of 1atm . What is the new temperature of the gas , in degree C ?a) -66.9
b) -69.0
c) -16.3
d) -157.3
e) -209.3
Physics Properties Of Matter Level: High School
Archimedes’s Principle
An object of a certain material (specific gravity = 4.81) has a volume of 43.2 cubic centimeter and is hanging by a string in a large beaker of pure water , as shown in the figure at ”click here “. What is the tension in the string (in N ) ?a) 1.36
b) 1.43
c) 1.61
d) 1.821
e) 2.06
