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LASIK eye surgery utilizes pulses of laser light to shave off tissue from the cornea, reshaping it. A typical LASIK laser emits a 1.4-mm-diameter laser beam with a wavelength of 193nm. Each laser pulse lasts 12ns and contains 1.0mJ of light energy
Part A
What is the power of one laser pulse?
Part B
Through the very brief time of the pulse, what is the intensity of the light wave?
A certain particle has a weight of 34 N at a point where the acceleration due to gravity is 9.80 m/s2. What are the weight and mass of the particle at a point where the acceleration due to gravity is 4.90 m/s2
In a second training exercise, the centrifuge speeds up from rest with a constant angular acceleration. When the centrifuge reaches an angular speed of 2.50 rad/s.
A variable force, given by the analytical expression F = 3x2 with x in meters, acts on an object, changing only the kinetic energy of the object. Assume the particle starts out at x=0. a) Make a sketch of the force acting on the object as a function ..
if the coefficient of kinetic friction between the 50-kg crate and the ground is .3 determine the distance the crate
A hydrogen atom is in the n = 22 state. Use the Bohr model of the hydrogen atom, find the potential energy of the atom
a bullet moving horizontally to the right (+x direction) with a speed of 500 m/s strikes a sandbagk, What is the average acceleration in m/s of the bullet
A rectangular loop of wire of dimensions 12 cm × 25 cm faces a long straight wire. The two long sides of the loop are parallel to the wire, What translational force does the straight wire exert on the loop
a system is acted on by its surroundings in a way that it receives 50 j of heat while simultaneously doing 20 j of
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
An ambulance passes a bus stop at 50m/s with a siren of 340Hz, What is the wavelength heard by the bus stop costumers as the ambulance approaches
You are designing a delivery ramp for crates containing exercise equipment. Calculate the maximum force constant of the spring kmax that can be used in order to meet the design criteria
two capacitors, when connected in series have an equivalent capacitance of 200 microfarads. calculate the capacitance of each capcitor
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