6674

Physics Properties Of Matter Level: Misc Level

A metal wire increases its length by 2 mm when subjected to a tensile force.What elongation can be expected from this same force if the diameter of the wire was reduced to 1/2 of its initial value? Suppose the metal wire maintains its diameter, but doubles its length. What elongation would be expected from the same load?


6672

Physics Properties Of Matter Level: Misc Level

A solid cylindrical steel column is 6m long and 8cm in diameter. What is the decrease in length if the column supports a 90,000 kg load?


6510

Physics Properties Of Matter Level: Misc Level

Consider a point in the ocean about 8.60 km deep. The pressure at that point is huge, about 8.88 107 N/m2.

(a) Calculate the change in volume of 1.00m3 of water carried from the surface to this point in the ocean.---m3

(b) The density of water at the surface is 1.03 103 kg /m3. Find its density at this point.--kg/m3


6508

Physics Properties Of Matter Level: Misc Level

When water freezes, it expands about 8.20%. What would be the pressure increase inside your automobile,s engine block if the water in it froze? (The bulk modulus of ice is 2.00 109 N/m2.)---Pa


6506

Physics Properties Of Matter Level: Misc Level

A volume of 50.0 liters of oxygen at 10.0 %C and an absolute pressure of 1.88 atm is compressed to 36.6 liters, and at the same time the temperature is raised to 80%C. What will the absolute pressure be now?


6496

Physics Properties Of Matter Level: Misc Level

What is the net upward force on an airplane wing of 20 m2 if the speed of flow is 300 m/s across the top of the wing and 280 m/s across the bottom? net upward force=


6495

Physics Properties Of Matter Level: Misc Level

A steel safe of weight 1.00 x 10 4 N. is being raised to the top of a building. The steel cable to be used was only 15 m long and so an additional 7 m length of another cable had to be used. If both cables have a diameter of 1.00 cm, and the total stretch of both cables put together is 2.35 cm, what is the Young,s modulus of the second cable?The weight of both cables is negligible compared to that of the safe.


6494

Physics Properties Of Matter Level: Misc Level

The density of ice is 920 kg/cm3, and that of seawater is 1030 kg/m3. What fraction of the total volume of an iceberg is exposed?

Exposed fraction of the total volume of an iceberg=


6493

Physics Properties Of Matter Level: Misc Level

A large stone is resting on the bottom of the swimming pool. The normal force of the bottom of the pool on the stone

a. is equal to the weight of the stone

b. is equal to the weight of the water displaced

c. is equal to the sum of the weight of the stone and the weight of the displaced water

d. is equal to difference between the weight of the stone and the weight of the displaced water


6491

Physics Properties Of Matter Level: Misc Level

A glass container is half-filled with mercury, and a steel ball is floating on the mercury.If water is then poured on top of the steel ball and mercury, filling glass, what will happen to the steel ball?

a. If will float higher in the mercury

b. If will float at the same height.

c.It will float lower in the mercury.

d.It will sink to the bottom of the mercury.


6334

Physics Properties Of Matter Level: Misc Level

What mass of steam at a temperature of 100.% C, must be added to 2.9 kg of ice at a temperature of 0.0%C to yield liquid water having a temperature of 25.0%C?


6299

Physics Properties Of Matter Level: Misc Level

When the two arms of a U-tube manometer containing mercury are connected to two chambers, the difference in the heights of the mercury in the two arms is 4.5 cm. What is the difference in pressure between the chambers?(Density of mercury=13600 kg/m3 and g=9.8 m/s2)

a.6.0x105 Pa

b.1.0 x104 Pa

c.1.0 x105Pa

d. 6.0 x10 3 Pa


6269

Physics Properties Of Matter Level: Misc Level

The specific heat of gas at constant pressure is 1.70 times the specific heat at constant volume. Find the specific heat at constant pressure. (Universal gas constant R=8.31 J/(mol K)

a. 20.2 J/ (mol K)

b.12.5 J/(mol K)

c.24.0 J/(mol K)

d. 18.0J(mol K)


6245

Physics Properties Of Matter Level: Misc Level

The energy stored in a 52 micro Farad capacitor is used to melt a 6.0 mg sample of lead. To what voltage must the capacitor be initially charged assuming that the initial temperature of the lead is 20 degrees Celcius.


6226

Physics Properties Of Matter Level: Misc Level

 Water is pumped through a pipe to a tank at the top of a building. The pressure of the water at ground level is 2.2 x105 Pa and at the tank, the pressure is atmosopheric.If the diameter of the pipe is the same throughout, find the height at which the tank is located. Atmospheric pressure may be assumed as 1.0 x105 Pa and g as m/s2.

a. 24 m

b.16 m

c. 12 m

d. 20 m


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