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A forklift truck is being used to raise a 60 kh crate onto a shelf. The crate contains breakables so it must not slide on the forklift, in case it bangs into the uprights. The crate will be lifted constant accelerations, first speeding up at10 m/s2 at 60o to the horizontal, and then slowing down at 5 m/s2 at 60o to the horizontal. Find what will the friction force be during each part of the motion? Determine what kind of friction force is this and Why?
Monochromatic light is normally incident on a diffraction grating that is 1 cm wide and has 10,000 slits. What is the wavelength, in nm, of the incident light
A student uses an audio oscillator of adjustable frequency to measure the depth of a water well. How deep is the well
A beam of ultraviolet radiation, with frequency of2.78x1015 Hz is directed on a clean metalsurface. Calculate the maximum kinetic energy for an electron
A 120 kg scaffold is 6.6 meters long. It is hanging with two wires, one from each end. A 540 kg box sits 1 meter from the left end. What is the tension in the right hand side wire
At an outdoor market, a bunch of bananas attached to the bottom of a vertical spring of force constant 16.0 N/m is set into oscillatory motion with amplitude of 20.0 cm.
A walkway suspended across a hotel lobby is supported at numerous points along its edges by a vertical cable above each point and a vertical column underneath. how much does the point move down in meters
If the initial velocity of the glider is 0.5 m/s and the final velocity 1.3 m/s, then obtain how much energy is loss due to friction
The energy flow per unit time per unit area (S) of an electromagnetic wave has an average value of 601 mW/ m2
A 50.0-g object is attached to a horizontal spring, What is the velocity of the object when it is halfway to the equilibrium position if the surface is frictionless
A standard 1 kilogram weight is a cylinder 44.0 mm in height and 40.0 mm in diameter. What is the density of the material
A 2.0-kg piece of marble at 100 degree C is dropped into 1.5 kg of water at 1.0 degree C, What is the specific heat of the marble
The specifications associated with a commercial spectrophotometer are: Diffraction grating with 600 groves per mm. What is the reciprocal of the linear dispersion
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