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Standing waves of frequency 73 Hz are produced on a string that has mass per unit length 0.0160 kg/m. With what tension must the string be stretched between two supports if adjacent nodes in the standing wave are to be 0.47 meters apart?
What least horsepower must a motor have to be able to drag a 280 box along a level floor at a speed of 1.05 if the coefficient of friction is 0.50.
A violin string is 24.0 centimeter long. It sounds the musical note A (440 Hertz) when played without fingering. Find how far from the end of the string should you place your finger
Estimate the fraction of electrons excited above the fermi level at room temp for Aluminum. The effective mass of Al is 1.0xm, where m - free electron mass
The equipotential surfaces associated with an isolated point charge are:
A transparent oil with index of refraction 1.28 spills on the surface of water (index of refraction 1.33), producing a maximum of reflection with normally incident green light (wavelength 500 nm in air). Assuming the maximum occurs in the first order..
Monochromatic light with wavelength 570nm passes through a circular aperture with diameter 7.00?m. What is the diameter of the Airy disk on the screen
two wires are welded together end to end. the wires are made of the same material, but the diameter of one is twice that of the other. what is the length of the thick wire
A loudspeaker of mass 19.0 kg is suspended a distance of = 1.60 m below ceiling by two cables that make equal angles with the ceiling. Each cable has a length of = 3.30m . What is the tension in each of the cables.
A 6.00-kg object oscillates back and forth at the end of a spring whose spring constant is 76.0 N/in. An observer is traveling at a speed of 1.90x108 m/s relative to the fixed end of the spring. What does this observer measure for the period of os..
research and briefly identify the energy conservation measures that reduce a buildings energy use by reducing one or
a 2.0-kg rock that is initially at rest loses 407-J of potential energy while falling to the ground. What is the rock's speed just before hitting the ground
Determine the work function of sodium and cutoff frequency - Determine the scattering angle of the scattered photon with respect to the positive x-axis, the energy of the scattered photon and the kinetic energy of the scattered electron.
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