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When a laser beam reflects from a rotating mirror, it produces pulses of light with a band of frequencies centred on the fundamental optical frequency. Why do the light pulses give rise to a band of frequency?
A thin spherical shell of mass 0.450kg and diameter 0.160 m is filled withalcohol (= 806 kg/m3). Find the acceleration of the alcohol filled shell as it rises toward the surface of the water
A 3.9 kg stone is tied to a 5.8 m long string and swung around a circle at a constant angular velocity 1.7 1/s. Find the magnitude of the torque about the origin
A mass attached to a spring stretches it 2.5 cm from equilibrium. What is the angular frequency of the oscillation
A 47 g block of copper at -10 C is added to 150 g of water in a 71g aluminum cup. The cup and the water have an initial temperature of 4.2 C. Find the equilibrium temperature of the cup and its contents. What mass of ice, if any, is present when t..
An RLC circuit consists of a 100 omh resistor, a 20 micro Coulomb capacitor, and a 400mH inductor connected in series with a 120V, What is the reactant of the circuit
How many packs of shingles can the contractor lift before he begins to slide down the roof assuming the following Contractor weights and values for the coecient of static friction exists between the contractor and the roof.
A wire of radius a is surrounded by a cylindrical conductor of inner radius a and outer radius 2a,. find the radius at which the magnetic field is zero
In the 1950's, an experimental train that had a mass of 16000 kg was powered across a level track by a jet engine that produced a thrust of 5.76 × 105 N for a distance of 418 m. Find the work done on the train
Three forces act on a moving object. One force has a magnitude of 82.8 N and is directed due north. What must be the direction of the third force
A 5.3MeV (kinetic energy) proton enters a 0.15T field, in a plane perpendicular to the field. What is the radius of its path
An undersea research chamber for aquanauts is spherical with an external diameter of 4.7 m. calculate the buoyant force on the chamber
"As a baseball is being caught, its speed goes from 30 to 0 m/s in about 0.005 s. Its mass is 0.145 kg. What is the baseball's acceleration in m/s2 and in g's
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