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The frequency of a tuning fork can be found by the method shown. A long tube open at both ends is submerged in a beaker of water, and the vibrating tuning fork is placed near the top of the tube. The length L of the air column is adjusted by moving the tube vertically. The sound waves generated by the fork are reinforced when the length of the air column corresponds to one of the resonant frequencies of the tube. The smallest value for L for which a peak occurs in sound intensity is 6 cm. What is the frequency of the tuning fork? The speed of sound in air is 345 m/s. Answer in units of Hz What is the frequency of the tuning fork? The speed of sound in air is 345 m/s. Answer in units of Hz Answer in units of cm What is the value of L for the third resonant position? Answer in units of cm.
The resistance of a 9 H inductor is 90.0 ohms, What is the final steady current in the circuit
A metal rod 32 cm long moves in a plane perpendicular to a magnetic field of 200 G. Find the speed of the rod if the potential difference between the ends is 6 V
Desperate for money, you take a scary job climbing a very tall 2.640 hm high tower to make a repair. How far away are they in feet from the tower bottom
Two boxes sit side-by-side on a smooth horizontal surface. The lighter box has a mass of 5.96 kg, the heavier box has a mass of 7.46 kg. Calculate the contact force between these boxes
A typical wall outlet is 120 volts in the U. S. Personal MP3 players require much smaller voltages, calculate the number of turns on the secondary coil of the adapter transformer
The attractive electrostatic force between the point charges 7.14×10?6 and has a magnitude of 0.825, find the sign and magnitude of the charge Q
Three point charges are arranged along the x-axis. Charge q1= -4.85 nC is located at x1= 0.205m , and charge q2= 2.75 nC is at x2= -0.310m, What is the direction of the net force on q3
A flask is filled with 1.53 L (L = liter) of a liquid at 90.7 °C. When the liquid is cooled to 16.5 °C, find the coefficient of volume expansion of the liquid
A pilot of mass 70kg pulls out of a dive following a circular path of radius 850m and at a speed of 200m/s. what is the force that the pilot feels
Jill ( 60kg) is swinging on a rope swing that is 4m long, at what frequency does Jill need to pump her legs to get the swing going higher
Two racing boats set out from the same dock and speed away at thesame constant speed of 80.9 km/h for half an hour (0.500 h), theblue boat headed 29.2° south of west, and the green boat headed39.6° south of west.
The fastest recorded pitch in Major League Baseball was thrown by Nolan Ryan in 1974. If this pitch were thrown horizontally, How fast was Ryan's pitch
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