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Two pieces of steel wire with identical cross sections have lengths of L and 2L. The wires are each fixed at both ends and stretched so that the tension in the longer wire is four times greater than in the shorter wire. If the fundamental frequency in the shorter wire is 87 Hz, what is the frequency of the third harmonic in the longer wire?
Hz
A spring has a spring constant = 40 N/m. It is compressed by a distance 10 cm. The mass of the cart is 300 grams. The angle of incline of the track is 20º.
A tungsten target is struck by electrons that have been accelerated from rest through a 20.0-kV potential difference
The pressure of a garden hose is 2 atmospheres. If the cross-sectional area of the hose is 4 cm^2 and the nozzle output area is .4cm^, How fast does the water leave the hose
Zorch, an archenemy of Superman, decides to slow the earth's rotation to once per 31.0 h by exerting an opposing force at the equator and parallel to it. find how long Zorch must push with this force to accomplish his goal
while unloading furniture, a worker slides a heavy box down the ramp on the rope. find the mass of the box
X-rays are scattered from electrons in a carbon target. The measured wavelength shift is 0.00099 nm. Calculate the scattering angle
The drawing shows a uniform horizontal beam attached to a vertical wall by a frictionless hinge and supported from below at an angle ?= 36o by a brace that is attached to a pin. Find the magnitudes of these three forces
A narrow tube open at one end has varibale length. When a vibrating tuning fork is held near one end, What is a possible frequency of the tuning fork
A 10 kg crate (begins 3m off the ground) slides along a smooth horizontal frictionless surface at a constant speed of 4 m/s. What is the kinetic energy as it slides on the upper surface
The distance between the first and fifth minima of a single-slit diffraction pattern is 0.40 mm with the screen 50 cm away from the slit, Calculate the angle of the first diffraction minimum
A truck is traveling at 11.4 m/s down a hill when the brakes on all four wheels lock. How far does the truck skid before coming to a stop
The coefficient of volume epansion for diesel is 9.5*10 to the power of negative 4 degrees celcius an the coefficient of linear expansion for the steel truck is 11 times 10 mto the power of negative 6 degrees celcius.
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