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A LASIK vision correction system uses a laser that emits 10 ns-long pulses of light, each with 2.5 mJ of energy. The laser is focused to a 0.75 mm-diameter circle.
Part A) What is the average power of each laser pulse?
Part B) What is the electric field strength of the laser light at the focus point?
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.
Assuming that all the heat generated by the resistor is absorbed by the solid substance, and that it takes 4 minutes to raise the temperature from 20to 80 degrees C, compute the specific heat for the substance.
An electron, traveling at a speed of 6.10 × 107 m/s, strikes the target of an X-ray tube. What is the wavelength of the photon
A person notices a mild electric shock if the current along a path through the thumb and the index finger exceeds 80.0, Calculate the maximum allowable voltage with a wet-skin resistance of 1920
Clarify how Einstein's contribution to understanding the force between the earth and the moon differed from Newton's. Include a short statement of Einstein's explanation in the answer.
The efficiency of a particular Carnot engine is 0.310, Find the temperature of the low-temperature reservoir
A 30.0?F capacitor is charged to 210?C and then connected across the ends of a 4.20mH inductor, Find the maximum current in the inductor
A sound wave moving through water has a frequency of 256Hz and a wavelength of 5.77m.What is the speed of sound in water.
The overall magnification of an astronomical telescope is desired to be 26 Ã?. What is the overall length of the telescope when adjusted for use by the relaxed eye
An emf is induced in a conducting loop of wire 1.14m long as its shape is changed from square to circular, Find the average magnitude of the induced emf if the change in shape occurs in 4.23s
A charge of ?3.00nC is placed at the origin of an xy-coordinate system, find the x and y components of the total force and Find the direction of this force
Suppose the pressure in a container of soda is 15 atm. At 25oC, the Henry's Law constant for CO2 in water is 1.61 x 103 atm. Estimate the mole fraction of dissolved carbon dioxide in the soda
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