Physics Properties Of Matter Level: Misc Level
the height of the Eifel tower is 321 m during the summer when the temperature is 29.7 celcius. what is the magnitude of the change in the height of the tower, when the temperature cools down to-19.8 celcius during the winter? the coefficient of linear expansion of the towers material is 1.10*10^-5 1/celcius.(in cm)
a)1.75*10^1 b)2.32*10^1 c)3.09*10^1 d)4.11*10^1 e)5.47*10^1 f) 7.27*10^1 g) 9.67*10^1 h)1.29*10^2
Physics Properties Of Matter Level: Misc Level
Why do metals exhibit the photoectric effect more easily than other materials ?
Physics Properties Of Matter Level: Misc Level
Caculate the specific heat 12.7 g of an unknown metal whose temprature increased 25.0 Ceisius degrees when 80.0 J of heat energy was absorbed by the metal
Physics Properties Of Matter Level: Misc Level
A bee of mass 1g lands on the end of a horizontal twig, which starts to oscillate up and down with a period of 1 s. Treat the twig as a massless spring, and estimate its force constant.
Physics Properties Of Matter Level: Misc Level
How tall must a column of mercury, p-1.36x 104 kg /m3, be to exert a pressure equal to the atmosphere?
Physics Properties Of Matter Level: Misc Level
An iron bar 2.6 m long at room temperature (20%C).is heated uniformly along its length until its temperature reaches 1050%C. How much longer is the bar at the higher temperature?The coefficient of linear expansion of iron is 1.2x10-5(%C)~1.
Physics Properties Of Matter Level: Misc Level
An incompressible fluid moves through a pipe from left to right as shown above . The pipe narrows from a diameter of 5 cm at" A" to a diameter of 3 cm at " B" (Assume non- viscous laminar flow) *equal to *morethan*less than-The amountof fluid that passes"A" in one second is ---the amount of fluid that passes"B"in one second.-The velocity of the fluid at "A" is the velocity of the fluid at "B"-Then density of the fluid at "A"is the density of the fluid at "B"-The pressure at "A" is -- the pressure at "B"
Physics Properties Of Matter Level: Misc Level
The density of ice is 920 kg/m3, and that of sea water is 1030 kg/m3. Water fraction of the total volume of an iceberg is exposed?
Physics Properties Of Matter Level: Misc Level
Water is to be pumped to the top of the Empire State Building ,which is 1200 ft high .What gauge pressure is needed in the water line at the base of the building to raise the water to this heigh?
Physics Properties Of Matter Level: Misc Level
If 1.0 cubic meters of concrete weighs 5.00 E +4 N, what is the height of the tallest cylindrical concrete pillar that will not collapse under its own weight? The compression strength of concrete (the maximum pressure that can be exerted on the base of the structure)is 1.70 E+7 Pa.
Physics Properties Of Matter Level: Misc Level
A stainless steel orthodontic wire is applied to a tooth, as shown in the figure above. The wire has an unstretched length of 2.9 cm and a diameter of 0.23 mm.The wire is stretched 0.1 mm.Young,s modulus for stainless steel is 1.80 E+11 Pa. What is the tension in the wire?-What is the magnitude of the force on the tooth due to the wires?Disregard the width of the tooth.
Physics Properties Of Matter Level: Misc Level
For safety in climbing, a mountaineer uses a nylon rope that is 50 m long and 1 cm in diameter. When supporting a 84-kg climber, the rope elongates 1.1 m. Find its Young,s modulus.
Physics Properties Of Matter Level: Misc Level
When water freezes,it expands about 9%.What would be the pressure increase inside your automobile engine block if the water in it froze?( The bulk modulus of ice is 2.00E+9 N/2.)
Physics Properties Of Matter Level: Misc Level
What is the buoyant force in N on a 5.7 m3 helium balloon in air at standard conditions? The density of air is 1.3 kg/m3.
Physics Properties Of Matter Level: Misc Level
A tube carries water on the level in a nonturbulent flow condittion .The flow, F, is 0.17. 10-4 m3/s. What is the velocity of the water in m/s when it crosses a part of the tube which has a diameter, D,of 5.3 cm?
