Physics Properties Of Matter Level: University
Fluid in motionWhich one of the following statements concerning fluid streamlines is true?
a. In steady flow streamlines must remain parallel and equally spaced.
b. In turbulent flow two or more streamlines may cross.
c. In turbulent flow streamlines can begin or end at any point.
d. Streamlines are perpendicular to the velocity of the fluid at every point
e. In steady flow the pattern of streamlines does not change with time.
Physics Properties Of Matter Level: University
Law of floationA bolloon is released from a tall building. The total mass of the balloon including the enclosed gas is 2.0 kg. Its volume is 5.0 m3. The density of air is 1.3 kg/m3 will the balloon rise fall or remainstationary and why?
a. The balloon will remain stationary because its density is less than that of air.
b. The balloon will remain stationary because its density is less than that of air.
c. The balloon will rise because the upward buoyant force is greater than its weight.
d. The balloon will fall because the upward buoyant force is less than its weight.
e. The balloon will fall because the downward buoyant force is greater than the upward buoyant force.
Physics Properties Of Matter Level: University
FluidThe density of ice is 0.92 g/cm3 and the density of seawater is 1.03 g/cm3. A large iceberg floats in artic waters. What fraction of the volume of the iceberg is exposed?
Physics Properties Of Matter Level: University
BuoyantcyA balloon inflated with helium gas ( density = 0.2 kg/m3) has a volume of 6 x 10 ~3 m3. If the density of air is 1.3 kg/m3, What is the buoyant force exerted on the balloon.
Physics Properties Of Matter Level: University
FluidA force of 250 N is applied to a hydraulic jack piston that is 0.01 m in diameter. If the piston which supports the load has a diameter of 0.10m, approximately how much mass can be lifted by the load piston? Image any difference in height between the pistons.
Physics Properties Of Matter Level: University
Pascals LawWhich one of the following statements concerning a completely enclosed fluid is true?
a. Any change in the applied pressure of the fluid produces a change in pressure that depends on direction.
b. The pressure at all points within the fluid is independent of any of any pressure applied to it.
c. Any change in applied pressure produces an equal change in pressure at all points within the fluid.
d. An increase in pressure in one part of the fluid results in an equal decrease in pressure in another part.
e. The pressure in the fluid is the same at all points within the fluid.
Physics Properties Of Matter Level: University
PressureThe largest barometer ever built was an oil-filled barometer constructed in leicester England in 1991. The oil had a height of 12.2m Assuming a Pressure of 1.013 x 105 Pa what was the density of the oil used in the barometer?
Physics Properties Of Matter Level: University
PressureA submarine is operating at 100.0 m below the surface of the ocean . If the air inside the submarine is maintained at a pressure of 1.0 atmosphere what is the magnitude of the force that acts on the rectangular hatch 2.0 m x 1.0 m on the deck of the submarine?
Physics Properties Of Matter Level: University
PressureUsing the value of atmospheric pressure at sea level 1.0 x 105 pa estimate the total mass of the earths atmosphere above a 5-m area.
Physics Properties Of Matter Level: University
PressureHow much force does the atmosphere exert on one side of a vertical wall 4.00-m high and 10.0-m long?
Physics Properties Of Matter Level: University
DensityThe average density of the material in intergalactic space is approximately2.5 x 10'27 kg/m3. What is the volume of a gold sample p - 19300 kg/m3 that has the same mass as 8.0 x 1024 m3 of intergalactic space?
Physics Properties Of Matter Level: University
DensityAt standard temperature and pressure carbon dioxide has a density of 1.98 kg/m3. What volume does 0.85kg of carbon dioxide occupy at standard temperature and pressure?
Physics Properties Of Matter Level: University
SolidA cable stretches by an amount d when it supports a crate of mass M. The cable is cut in half. What is the mass of the load that can be supported by either half of the cable if the cable stretches by an amount d?
a. M/4
b.M/2
c. M
d. 2M
e. 4M
Physics Work,Power & Energy Level: University
Spring forceA spring required a force of 1.oN to compress it 0.1m. How much work is required to stretch the spring to 0.4m?
Physics Waves And Oscillations Level: University
Equation of S H MThe position of a simple harmonic oscillator is given by x(t) = (0.5m) cos(960 t/3) where t is in seconds. What is the period of the oscillator?
