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Your friend recently purchased a musical instrument that generates sound waves using several strings. When the strings vibrate they cause sound waves of the same frequency to combine in a tube open at both ends. The strings of the instrument are identical and waves on these strings have a speed of 125 m/s. The open tube has a length of 0.895 meters and the speed of sound in air should be taken to be 344 m/s. Determine the length of the strings of this instrument.
A 90 kg astronaut and a 1600 kg satellite are at rest relative to the space shuttle. The astronaut pushes on the satellite, giving it a speed of 0.24 m/s directly away from the shuttle.
A typical compact disc stores information in tiny pits on the disc's surface. What's the frequency of electromagnetic waves that have a wavelength equal to the typical CD pit size
The weight of passengers on a roller coaster increases by 60% as the car goes through a dip with a 38m radius of curvature
The dielectric in a capacitor serves two purposes. It increased the capacitance, compared to an otherwise identical capacitor with an air gap, What is the maximum energy that can be stored if the plates are separated by a 0.50-mm-thick Teflon sheet
Determine the coefficient of kinetic friction between the crate and surface.
A spring, with a force constant 5.00x10^2 n/m, is horizontal with one end fixed to a wall and the other end free. How far will the block travel once the spring is released
A mass (10 kg) rests on a surface (ustatic=.6) connected by a cord to a hanging mass of 2 kg. What is the acceleration of the heavier mass
On a spacecraft, two engines fire for a time of 598 s. One gives the craft an acceleration in the x direction of ax = 4.92 m/s^2, Calculate the magnitude of the initial velocity
A box slides down a ramp between a delivery area and soring area. You must determine the angle this ramp should have with the horizontal direction so that a 500 pound box takes 5.0 seconds to slide down the ramp starting from rest at the top. While t..
An inductor has a 53.6-? reactance when connected to a 60.0-Hz source. What is the maximum current in the inductor
A 4.5kg ball with a velocity of 4.0m/s in the+x-direction collides head-on elastically with a stationary 1.8kg ball. What is the speed of the first ball after the collision
A brass plate with a thickness of 1.00 cm is placed over a copper plate with a thickness of 2.00 cm. What is the effective coefficient of thermal conductivity for the brass - copper layer
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