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A 50 cm long wire with a mass of 1.0 g and a tension of 440 N passes across the open end of a tube of air that is closed on the other end. The wire is fixed at both ends and then bowed in the middle to produce its fundamental frequency and generate a sound wave. The tube length is then adjusted until the fundamental frequency of the tube is heard. What is the length of the tube? You can use the velocity of sound as 340 m/s.
Two particles of equal mass have different velocities and acceleration of one particle is zero, determine the movement of the centre of mass of the two particles
A simple pendulum is made from a 0.617 m-long string and a small ball attached to its free end. The ball is pulled to one side through a small angle and then released from rest. After the ball is released, how much time elapses before it attains its ..
find out the magnitude of the gravitational force exerted by one mass.
A student sits at rest on a stool that can rotate without friction. The moment of inertia of the student-stool system is 3.3 kg•m2. Find the resulting angular speed of the stool and the student
A large electromagnet coil is connected to a 121 Hz ac source. The coil has a resistance 410 ohms , and at this source frequency the coil has an inductive reactance 260 ohms. What must the rms voltage of the source be
Your car horn happens to have the unusual property of emitting a pure tone at a frequency of 640. Hz. What is the frequency of the echo
The radius of the hydrogen atom is 0.053 nm. What is the frequency of the circular motion of the electron in the hydrogen atom
The ball is free from rest with the line taut and horizontal (θ = 90.0°). At what angle θ (measured from the vertical) would the fishline break.
A bomb at rest at the origin of an xy-coordinate system explodes into three pieces. Just after the explosion, one piece, of mass m, what is the magnitude of the velocity of the third piece
a 49.0-g super ball traveling at 30.0 ms bounces off a brick wall and rebounds at 15.0 ms. a high-speed camera records
A 7.80-nF capacitor is charged up to 15.0V , then disconnected from the power supply and connected in series through a coil. Calculate the maximum charge on the capacitor
A quarterback throws a pass that is a perfect spiral. In other words, the football does not wobble, but spins smoothly about an exis passing through eaach end of the ball. how many revolutions has the ball made while in the air
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