Physics Properties Of Matter Level: Misc Level
At the surface of a freshwater lake the air pressure is 1.0 atm. At what depth under water in the lake is the water pressure 4.5 atm?
Physics Properties Of Matter Level: Misc Level
Assume 3 moles of a diatomic gas has an internal energy of 10 kJ. Determine the temperature of the gas after it has reached equilibrium.
Physics Properties Of Matter Level: University
Pressure and DensityAbuiders brick has dimensions 20cm x 12cm x 5cm. What is its volume in m3?
(ii) The density of brick is 2.1 x 10 to the power 3kgm-3 what is the mass of the brick? What its weight?
(iii) Show diagramatically how you would place the brick to produce the maximum pressure and the minimum pressure on a surface. Calculate
Physics Properties Of Matter Level: University
FluidCalculate the pressure in Nm-2 ( thats to the power negative two) due to water at depth of 2.5 metres in a swimming pool. Thke the density of pool water to be 1000kg m ( to the power negative3)
(ii) Express this pressure in kPa
(iii) By how much would the pressure increase if you were swimming at a depth of 2.5m in sea water which has a density of 1030 kg m ( to the power-3)
Physics Properties Of Matter Level: University
Moment of Inertia and conservation of MomentumCircular disks are used in automobile clutches and transmission. When a rotating disk couples to a stationary one through frictional force the energy from the rotating disk can transfer to the stationary one. (a) Is the angular speed of the coupled disks (1) greater than (2) less than or (3) the same as the angular speed of the original rotating disk? Why? (b) If the disk rotating at 800 rpm couples to a stationary disk with three times the moment of inertia what is the angular speed of the combination?
Physics Properties Of Matter Level: University
Torquem1=8.0 kg m2=3.0kg degree=30
Radius and mass of pulley are 0.10m and 0.10 kg respectively. (A) What is the acceleration of the masses? (Neglect friction and strings mass) (b) If the pulley has a constant frictional torque of 0.050 m x N when the system is in motion what is the acceleration of the masses? ( Hint: Isolate the force. The tensions in the strings are different. Why?)
Physics Properties Of Matter Level: University
TorqueIt has a picture of a painter that is standing on the board with measurements 1.5m 2.5m 1.5m painter weighs=70kg board weighs=15kg Suppose that the board were suspended from vertical ropes attached to each and instead of resting on scaffolding. If the painter stood 1.5m from one end of the board. What would the tensions in the ropes be?
Physics Properties Of Matter Level: University
FrictionA student investigating circular motion places a dime 10cm from the center of a 33 1/3-rpm record on a turntable. The record player can accelerate at 1.42 rad/s^2. The student notes that the dime slides outward 2.25s after she has switched on the turntable. (a) Whydoes the dime slide outward? (b) What is the coefficient of static friction between the dime and the record?
Physics Properties Of Matter Level: University
Reflection of WaveWave phenomena
Consider waves incident on an obstacle. There will be a significant shadow region if:
(a) Wavelength>> objest size
(b)Wavelength equal to object size
(c) Wavelength << object size
Physics Properties Of Matter Level: University
Mode of VibrationVibrating Air Columns
Consider a closed 30.0cm long organ pipe. What is the frequency of the 2nd overtone when the speed of sound is 336m/s?
Physics Properties Of Matter Level: University
Fluid MachanicsThe large beaker in the picture is set up so that the water displaced by the submerging weight overflows into the small beaker.
When would scale (a) again read 10N?
a. B only
b. E only
c. C only
d. D only
e. All of the above
Question Diagram
Physics Properties Of Matter Level: University
Liquid an MotionWhat must be the pressure difference between the ends of a 1.0cm diameter 30 meter long hose if it is to deliver 0.10 liter of water per second? ( Viscosity 0.0072 Ns/m specific gravity 1.00)
a. 0.87 atm
b. 5.2 atm
c. 11 atm
d. 2.1 atm
Physics Properties Of Matter Level: University
GasA piston weiging 12 N rests on a sample of gas in a cylinder 5 cm in diameter (a) What is the gauge pressure in the gas (b) What is the absolute pressure in the gas ( in this one is it just a matter of finding the area of the circle of the cylinder which is PI 2.5 r and dividing into 12)
Physics Properties Of Matter Level: University
Law of floatationA design has been proposed for a modern helium-filled airship that is to have a useful lift of 5x 10^5 kg at sea level.
(a)How many m^3 of helium must the airship contain?
(b) The length of the airship would be 400m. If it were a cylinder what would its diameter be?
Physics Properties Of Matter Level: University
Archemadies PrincipleA steel tank whose capacity of 200L has a mass of 36 kg.
(a)Will it float in seawater when emtpy.
(b) When filled with fresh water.
(c)When filled with gasoline
