7563

Physics Properties Of Matter Level: Misc Level

Why don,t the sizes of different molecules present in a gas enter into the equation for the gas laws?


7562

Physics Properties Of Matter Level: Misc Level

If your property must be measured with a metal tape in order to determine the amount of your property taxes, would you ratherr have it measured in the summer or the winter?Remember that your property will not significantly expand or contract with the change in season.


7472

Physics Properties Of Matter Level: Misc Level

A bar 2. 0 long is suspended horizontally from its ends by steel wires 1.0 long . The wires have radii of 1.0 mm. A mass of 20 kg is then attached 40 cm from one end of the bar. what is the difference in length between the wires?


7471

Physics Properties Of Matter Level: Misc Level

A certain material has a density of (rho) and a tensile strenght of U. How long a rod of this material can be suspended from one end without breaking under its its own weight?What is this length in the case of aluminum? steel? (  assume the density of steel to be the same as that of iron)


7461

Physics Properties Of Matter Level: Misc Level

A light spring of constant k=160 N/m rests vertically on the bottom of a large beaker of water.A 5.00 1g block of wood (density=650 1g/m^3) is connected to the spring, and the block-spring system is allowed to come to static equilibrium. What is the elongation (triangle)L of the spring?


7374

Physics Properties Of Matter Level: Misc Level

The Mariana Trench, in the Pacific Ocean, is about 11.0 km deep.The acceleration of gravity is 9.81 m/s^2.If atmospheric pressure at sea level is 1.01x10^5 Pa and the density of sea water is 1.025x10^3 kg/m^3, how much pressure would a submarine need to be able to withstand to reach this depth? Answer in units of Pa.


7373

Physics Properties Of Matter Level: Misc Level

A 79 kg woman balances on one heel of a pair of high-heeled shoes.The acceleration of gravity is 9.8 m/s^2. If the heel is circular with radius 0.438 cm, what pressure does she exert on the floor?

Answer in units of N/m^2.


7342

Physics Properties Of Matter Level: Misc Level

A 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


7311

Physics Properties Of Matter Level: Misc Level

A balloon is released from a tall building. The total mass of the balloon including the enclosed gas is 2.0 kg.It,s volume is 5.0 m3.The density of the air is 1.3 kg/m3. will the balloon rise, fall, or remain stationary and why?


7310

Physics Properties Of Matter Level: Misc Level

The density of ice is 0.92 g/cm3,and the density of seawater is 1.03 g/cm3. A large iceberg floats in the Arctic water. What fraction of the volume of the iceberg is exposed?


7309

Physics Properties Of Matter Level: Misc Level

A ballon inflated with helium (density=0.2 kg/m3) has a volume of 6x10-3 m3. If the density of air is 1.3 kg/m3, what is the buoyant force exerted on the balloon?


7308

Physics Properties Of Matter Level: Misc Level

A  force of 250N is applied to a hydraulic jack that is 0.01 m in diameter. If the piston which supports the load has a diameter of 0.10 m, approx how much mass can be lifted by the load piston? Disregard any height differences between pistons.


7307

Physics Properties Of Matter Level: Misc Level

The largest barometer built was oil- filled and had a height of 12.2 m.Assuming a pressure of 1.013 x 105 Pa, what was the density of the oil used in the barometer?


7306

Physics Properties Of Matter Level: Misc Level

A submarine is operating at 100 m below the surface of the ocean.If the air inside is maintained at a pressure of 1.0 atmosphere, what is the magnitude of the force that acts on the regular hatch 2.0 m x 1.0 m on the deck of the submarine?


7305

Physics Properties Of Matter Level: Misc Level

Using the value of atmospheric pressure at sea level,1.0 x 105 pa,estimate the total mass of the earth,s atmosphere above a 5 m2 area.


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