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The frequncy doubled output of a laser has a wavelength of 532nm. If each pulse of light has a total energy of 0.550J and the repetition rate of the laser is 30Hz, how many photons does the laser emit at 532 nm in 3 minutes?
It continues to fly along the same horizontal arc, but increases its speed at the rate of 1.10 m/s2. Find the acceleration in this situation at the moment the hawk's speed is 4.25 m/s. Find out the magnitude and direction (degrees)
At rest, the car's horn sounds at a frequency of 455 Hz. The horn is sounded while the car is moving down the street. A bicyclist moving in the same direction with one-third the car's speed hears a frequency of 427 Hz. What is speed of the car.
A solid sphere of radius 10 m and mass 2.5 kg rolls down a ramp that is 3 m high. What is its velocity at the bottom of the ramp
An ant, crazed by the sun on a hot Texas afternoon, darts over an xy plane scratched in the dirt. What are the magnitude and angle (relative to the positive x axis) of the overall displacement
A certain defibrillator sends 0.12 C of charge through the heart. How much energy is released when it discharges
Two large, parallel, conducting plates are 26cm apart and have charges of equal magnitude and opposite sign on their facing surfaces. An electrostatic force of 2.8 x10-15 N acts on an electron placed anywhere between two plates.
A 110 g cube of ice at 0°C is dropped into 1 kg of water that was originally at 90°C. What is an final temperature of the water after the ice has melted.
Consider a Bragg mirror with nhigh=3.5, nlow=3.1, thigh=60.7nm, tlow=68.5nm , estimate the overlap of light with low index material
Two identical metal spheres are 2.0 g each and are charged equally. They have a separation distance of 3.0m. What is a displacement current
In an amusement park ride, cars are suspended from L = 4.20 m cables attached to rotating arms at a distance of D = 6.06 m from the axis of rotation. What is the angular speed of rotation
A small remote-control car with a mass of 1.60 kg moves at a constant speed of v = 14.0 m/s in a vertical circle inside the hollow metal cylinder that has the radius of 5.00 m.
A Ferris wheel with a radius of 14.0 m rotates at a constant rate, completing one revolution in 30.0 s. What is the apparent weight of a 60 passenger when she is at the bottom of the wheel.
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