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A string with linear mass density 4.3 g/m is stretched and found to carry transverse waves at a speed of 42 m/s. Find the tension in the string.
A heavy pole, of mass M and length L, is freely hinged to a wall at the point 0. A rope connects the other end of the pole, B, to a fixed point A on the wall above 0. The system is in equilibrium, with the pole making an angle θ with the horizonta..
Suppose that a particle of mass 0.24 kg acted upon by a spring undergoes simple harmonic motion. What is the total energy of this motion
The 1992 wold speed record for a bicycle (human powered vehicle)was set by Chris Huber. His time through the measured 200 m stretchwas was a sizzling 6.509 s, at which he commented, "Cogito ergozoom!"
The wavelength of the laser beam used in a compact disc player is 780 nm. Estimate the spacing between the slits of the grating
A car with mass M traveling with speed V has a kinetic energy KE. What is the kinetic energy of a second car that has mass M/2 and travels with speed 2V
A meterstick moving at 0.892c relative to the Earth's surface approaches an observer at rest with respect to the Earth's surface. What is the meterstick's length as measured by the observer
Green light (? = 546 nm) strikes a single slit at normal incidence. What width slit will produce a central maximum
The laser in a DVD player emits light at a wavelength of 640 nm. The laser in a Blu-Ray player emits light at 405 nm. What is the photon energy of DVD player laser, in eV?
Near the surface of the Earth there is an electric field of about 150 V/m which points downward. Use conservation of energy to determine the difference in the speed of the two balls when they hit the ground
A bird watcher meanders through the woods, walking 0.506 km due east, 0.736 km due south, Determine the magnitude (in kilometers) of the bird watcher's displacement
After having collected samples along the shore all day long, a marine biologist walks back to her campsite, 1.69 km away. What distance did the dog run
A 2 kg box is raised from rest a distance of 3 m by a vertical force of 110 N. Find the final kinetic energy of the box
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