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A solid wood door 0.60 m wide is hung in a metal door way at 0.0°C by a clearance of 1.8 mm on the side. If the linear coefficient of expansion of the wood is 6.0 X10-5(C°)-1, at what temperature would the door begin to touch the side of the doorway? Suppose that the metal doorway does not expand significantly.
Expalin by how much does the potential energy of a 18.0-kg child increase when the child climbs a normal staircase to the second floor?
The density of gold is 19 times that of water. If you take a gold crown weighing 30N and submerge it in water, what will the buoyant force on the crown be
A solenoid contains 780 coils of very thin wire evenly wrapped over a length of 17.5cm . Each coil is 2.50cm in diameter. what is the magnetic field at its center
The electron gun in a traditional television tube fires electronsof kinetic energy 25 keV at the screen in a circular beam 0.22 mmin diameter; 5.6 multiplied by 1014 electrons arrive eachsecond. Calculate the magnitude of the magnetic field produc..
If a human ear canal can be thought of as resembling an organ pipe, closed at one end, that resonates at a fundamental frequency of 2,975 Hz, what is the length of the canal? Use normal body temperature 37°C for your determination of the speed of sou..
a 1.0m length of straight wire carries a current of 21 a in a uniform magnetic field of 60 mt whose direction is at an
A bottle of saline solution (with a specific gravity of 1.02) is attached to a 1.2 m long piece of tubing with a 1.0 cm inner diameter. If the tubing is held vertically, filled with saline, and clamped at the bottom, (a) what is the gauge pressure at..
The pilot of an airplane wants to fly East in the presence of a 50 km/h wind with direction 60 degrees North of West as seen by a ground observer. Find the angle the plane must make respect to East
The Calorie (or kcal) is another energy unit and is commonly used to measure food energy (as well as heat). How many Calories would you burn walking up a flight of stairs for an hour
Sodium light (589.3 nm) from a narrow slit illuminates a Fresnel bi-prism made of glass of refraction index 1.5. What is the biprism angle
A thin spherical shell of mass 4.00 kg and diameter 0.200 m is filled with helium (density ? = 0.180 kg/m3). How long will it take for the top of the shell to reach the water surface
When a quarterback throws a quick pass, he pushes on the ball with constant horizontal force for 0.10 sec, while his hand moves forward 0.80 m. find the work done on the ball by the quarter back
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