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 Force & Laws Of Motion Level: Misc Level
Atmospheric pressure at sea level is about 1.0x105 Pa. How much force does the atmosphere exert on a driveway that is 30.0 m long and 6.0 m wide?
Physics Circular Motion Level: Misc Level
Answer the following question (s), showing your calculations.A runner moving at a speed of 5.3 m/s rounds a curved track with a 79 -m radius .What is the runner,s centripetal acceleration?
Physics Rotational Mechanics Level: Misc Level
A person with a mass of 64 kg sits at a distance of 1.5 m from the pivot point on a 5.0-m seesaw. Where would a person with a mass of 72 kg have to sit tobalan ce the seesaw?
Physics Work,Power & Energy Level: Misc Level
A 0.24-kg ball is dropped from a height of 3.5 m and bounces to a height of 1.8 m.Whatis its loss in potential energy?
Physics Work,Power & Energy Level: Misc Level
Each step of a ladder increases one ,s vertical height 39 cm .If an 86.0-kg painter climbs 6 steps of the ladder, what is the increase in potential energy?
Physics Work,Power & Energy Level: Misc Level
Compare the kinetic energies of a biker and a biker (with a combined mass of 73.0 kg) traveling at 2.52 m/s and the same biker and biker traveling twice as fast.
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.
