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Part A High-power lasers are used to cut and weld materials by focusing the laser beam...
High-power lasers in factories are used to cut through materials such as cloth and metal. One...
High-power lasers in factories are used to cut through materials such as cloth and metal. One such laser has a beam diameter of 1.19-mm and generates an electric field having an amplitude of 0.77-MV/m at the target. Find the amplitude of the magnetic field. (Give your answer to 2 sig. fig.)
5.) Lasers can be used to drill or cut material. One such laser generates a series...
5.) Lasers can be used to drill or cut material. One such laser generates a series of high intensity pulses rather than a continuous beam of light. Each pulse contains 1.00 Joules of energy and lasts 18 nanoseconds. The laser fires 15 such pulses per second. (a) Find the peak power of the laser. (b) Find the average power output of the laser. (c) A lens focuses a laser beam to a 15 μm diameter circle on the target. During...
high power lasers in factories are used to cut fhfoguh cloth and metal . one such...
high power lasers in factories are used to cut fhfoguh cloth and metal . one such later has a beam diameter of 2.00 mm has an intensity if 477 MW/m^2.. what is the power deleivedd by the laser. (mega=million) a. 477 W b. 954 W c. 3 x 10 ^6 W d. 1500 W e. other.
High power lasers in factories are used to cut through cloth and metal (Figure P34.23). One...
High power lasers in factories are used to cut through cloth and metal (Figure P34.23). One such laser has a beam diameter of 1.00 mm and generates an electric field having an amplitude of 0.300 MV/m at the target. IND Figure P34.23 (a) Find the amplitude of the magnetic field produced. mT (b) Find the intensity of the laser. 405 Your response differs from the correct answer by more than 100%. MW/m (c) Find the power delivered by the laser....
P3.4. The spot size is clearly extremely important in determining the power density of a focused ...
P3.4. The spot size is clearly extremely important in determining the power density of a focused laser beam, an important determi- nant of how it may be used in surgery. However, there is a basic limitation on how small a spot one can achieve with a given wavelength laser beam, ; a given diameter laser beam (D); and a lens with focal length, f. This smallest spot sizc is given by: where d is the diameter of the focused laser...
A helium-neon laser of the type often found in physics laboratories has a beam power of...
A helium-neon laser of the type often found in physics laboratories has a beam power of 4.00 mW at a wavelength of 633 nm. The beam is focused by a lens to a circular spot whose effective diameter may be taken to be equal to 2.00 wavelengths. A). Calculate the intensity of the focused beam. B). Calculate the radiation pressure exerted on a tiny perfectly absorbing sphere whose diameter is that of the focal spot. C). Calculate the force exerted...
Very short pulses of high-intensity laser beams are used to repair detached portions of the retina...
Very short pulses of high-intensity laser beams are used to repair detached portions of the retina of the eye. The brief pulses of energy absorbed by the retina welds the detached portion back into place. In one such procedure, a laser beam has a wavelength of 810 nm and delivers 250 mW of power spread over a circular spot 510 μm in diameter. The vitreous humor (the transparent fluid that fills most of the eye) has an index of refraction...
Need answer for all multiple choice 30. If f78 and 1/125 (s) gives the (s) under...
Need answer for all multiple choice
30. If f78 and 1/125 (s) gives the (s) under the same lighting condition? proper exposure, what f-stop number should be used with 1/500 a) fi4 c)f116 a) You choose a bigger f/# pth of field (DOF) without changing the exposure, you do which of the following? c) You 32. Which of the following is NOT TRUE for a Keplerian telescope? b) You increase the shutter speed. d) You choose a wide-angle camera lens....
69. THE ENDOSPORE itself is might to stain_?_ color in an ACID FAST stain. (a) HOT...
69. THE ENDOSPORE itself is might to stain_?_ color in an ACID FAST stain. (a) HOT pink (c) purple (d) green (e) baby-blue 70. All STAINS begin with a properly prepared _?_ . (a) dye (b) slide (c) smear (d) dog (e) cat 71. Which of the following is an ENDOTOXIN found in some microbes? This is results in fever, blood vessel dilation and possibly SHOCK when it is released into the human blood stream? (a) the plasma membrane (b)...
Risk management in Information Security today Everyday information security professionals are bombarded with marketing messages around...
Risk management in Information Security today Everyday information security professionals are bombarded with marketing messages around risk and threat management, fostering an environment in which objectives seem clear: manage risk, manage threat, stop attacks, identify attackers. These objectives aren't wrong, but they are fundamentally misleading.In this session we'll examine the state of the information security industry in order to understand how the current climate fails to address the true needs of the business. We'll use those lessons as a foundation...
High power lasers in factories are used to cut through cloth and metal (Figure P34.23). One such laser has a beam diameter of 1.00 mm and generates an electric field having an amplitude of 0.300 MV/m at the target. IND Figure P34.23 (a) Find the amplitude of the magnetic field produced. mT (b) Find the intensity of the laser. 405 Your response differs from the correct answer by more than 100%. MW/m (c) Find the power delivered by the laser....
P3.4. The spot size is clearly extremely important in determining the power density of a focused laser beam, an important determi- nant of how it may be used in surgery. However, there is a basic limitation on how small a spot one can achieve with a given wavelength laser beam, ; a given diameter laser beam (D); and a lens with focal length, f. This smallest spot sizc is given by: where d is the diameter of the focused laser...
Need answer for all multiple choice
30. If f78 and 1/125 (s) gives the (s) under the same lighting condition? proper exposure, what f-stop number should be used with 1/500 a) fi4 c)f116 a) You choose a bigger f/# pth of field (DOF) without changing the exposure, you do which of the following? c) You 32. Which of the following is NOT TRUE for a Keplerian telescope? b) You increase the shutter speed. d) You choose a wide-angle camera lens....
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