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Photorefractive keratectomy (PRK) is a laser-based surgery process that corrects near- and farsightedness by removing part of the lens of the eye to change its curvature and hence focal length. This procedure can remove layers 0.250?m thick in pulses lasting 12.0ns with a laser beam of wavelength 193nm . Low-intensity beams can be used because each individual photon has enough energy to break the covalent bonds of the tissue.
A) What is the energy of a single photon?
The air inside a bicycle tirenpumphas 202 joules of work done on it as 66.1 joules of heat is conducted away from it
What is least value for which stick remain in equilibrium
The component of the external magnetic field along the central axis of a 125-turn coil of radius 29.0 cm decreases from 2.90 T to 0.400 T in 2.40 s. what is the magnitude of the induced current in the coil
The equation of a transverse wave traveling along a very long string is y = 5.0 sin (0.055 ?x + 6.0 ?t), compute the amplitude of propagation of the wave
A small block of mass 1.21 kg slides without friction on a horizontal table. Initially it moves in a circle of radius R0 = 0.62 m with a speed 1.8 m/s. What is the torque placed on the mass by the string
The diameter of a specific copper wire is 8.364 mm, Find the resistance of a 1.2 km length of such wire used for power transmission..
A flat sheet of crystalline quartz has a thickness of 1.6 cm. It is on top of the flat sheet of diamond that has a thickness of 2.10 cm. Light strikes the crystalline quartz perpendicularly and travels through it and then throughout the diamond.
It is possible to return the current in the bulb to the value calculated in part (a) by adding an inductor in series with the bulb and the capacitor. What is the value of the inductance of this inductor
Two balls , one of gold with a mass of 100 kg and one of wood with a mass if 1 kg, are suspended 1 meter apart. find attractive force the wooden ball acting on the gold ball
What the stopping distance of the car is as measured from the point where the driver first notices the red light.
A car of mass M = 1100 kg traveling at 45 km/hour enters a banked turn covered with ice. The road is banked at an angle theta, and there is no friction between the road and the car's tires.
Two small insulating spheres with radius 5.50×10?2m are separated by a large center-to-center distance of 0.555m, What is the direction of the electric field at this point
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