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A variable-length air column is placd just below a vibrating wire that is fixed at both ends. The lenth of the air column open at one end is gradually increased from zero until the first position of resonance is observed at L=34.0cm. The wire is 120cm long and is vibrating in its third harmonic. If the speed of sound in air is 340m/, what is the speed of transverse waves in the wire?
An infinitely long line of charge has a linear charge density of 4.50×10?12C/m. How close does the proton get to the line of charge
Let x= the radius of earth's orbit=1 Au. and y = the radius of venu's orbit = 0.723 Au. and let d = the distance between venus and earth in AU. What are the largest and smallest values of d
Compute the number of electrons in a small, electrically neutral silver pin that has a mass of 9.0g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol.
Nitrogen in a horizontal piston-cylinder assembly expands from an initial volume of 0.10 m3 to a final volume of 0.5 m3 as the gas is heated for 5 minutes by an electrical resistance heater consuming 1 kW of electric power
A building has two open doors facing the bay. The walls of the building absorb sound well, so multiple reflections can be ignored. Two people are standing a distance L = 150 m from the wall with the open doors, as pictured.
A dockworker applies a constant horizontal force of 85.0N to a block of ice on a smooth horizontal floor. The frictional force is negligible. What is the mass of the block of ice
a 286-g object is attached to a spring and executes simple harmonic motion with a period of 0.220 s. if the total
A boat has a mass of 4790 kg. Its engines generate a drive force of 4350 N due west, while the wind exerts a force of 940 N due east, What is the boat's acceleration, with correct sign
When a high-power laser is used in the Earth's atmosphere, the electric field associated with the laser beam can ionize the air, At this maximum intensity, what power can be delivered in a cylindrical beam of diameter 3.98 mm
A simple pendulum uses a steel wire as the "string." The length of this wire is 1.5 m at room temperature. What is the change in the period of the pendulum
A low tide is occuring at Galveston, TX (29o N,95o W). What other longitude is also experiencinga low tide, and what two longitudes are experiencing hightides
what are the magnitude and direction of its acceleration. A potential difference of 80 mV exists between the inner and outer surfaces of the cell membrane. The inner surface is negative relative to the outer surface. How much work is required to ej..
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