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- Question is in picture attached. Kindly check the answer before submitting the solution. In very recent past wrong solutions have been posted for this question. Kindly submit solution only when doubly sure.do not assume 72/17 = 4.25 as 4.5 as being done in solutions to this question very recently.Tungsten is a very high density, high melting point, and hard metal. These properties are partially due to its body centered cubic (BCC) crystal structure. Tungsten has an atomic number of 74 and an average mass of 183.8u. (1u = 1.661x10-27 kg). X-ray diffraction experiments determine that the Bravais lattice has a characteristic length of 3.155 Å (This means each side of the cube shown below has a length of 0.3155 nm.) How many complete tungsten atoms are there in each BCC unit cell?Tungsten is a very high density, high melting point, and hard metal. These properties are partially due to its body centered cubic (BCC) crystal structure. Tungsten has an atomic number of 74 and an average mass of 183.8u. (1u = 1.661x10-27 kg). X-ray diffraction experiments determine that the Bravais lattice has a characteristic length of 3.155 Å (This means each side of the cube shown below has a length of 0.3155 nm.)What is the density of single-crystalline tungsten? (Give your answer in g/cm.) Note: Single-crystalline indicates that the BCC unit cell repeats indefinitely. In poly-crystalline metals there are multiple domains with boundaries where the crystal structures do not line up. These materials tend to be much more brittle.
- Q blem 9: Two mirrors are held at an angle of y-130 degrees with respect to one another. A ray of light is incident of the first mirror at an angle of 8. When it reflects off of the mirror next to it makes an angle of o-13.5 degrees. Randomized Variables i -130 t(a) Write an expression for the angle of incidence 8. a V d i m Submit B 0 8 P Part (b) Numerically what is this angle? Hent 9 a h k t ( INH + NO 4 7 89 BO 4 5 6 1 2 3 0 A END CLEAR ACKUACE I give up!of 0.6 W per pulse. If the wavelength of the laser light is 60 nm. (a) how much energy is deposited per pulse and (b) how many photons does each pulse contain? 7. Light from a 2.5 mW laser source of aperture diameter 1.8 cm and A-5000 Å is focused by a lens of focal length 20 cm. Calculate the area and intensity of the image.An argon-ion laser with a power of 5.2 Watt has a beam diameter of 13 mm. The laser beam strikes perpendicularly on a mirror surface with a diameter of 20 mm. What is the average force exerted on the mirror that reflects 60% of the light and absorbs 40% of it in units of nN? (Take x = 3 and the speed of light of 3 x 10 m/s.) O 31.20 26.00 24.27 273 22.53
- Two flat mirrors are connected to each other such that they make an angle of ψ. A laser enters the system and first reflects off the bottom mirror, then the top mirror. When the beam exits it makes an angle of θ = 106 degrees with respect to the initial beam (see figure). Write an expression for the angle, ψ, between the mirrors.Problem 10: Two flat mirrors are connected to each other such that they make an angle of ψ. A laser enters the system and first reflects off the bottom mirror, then the top mirror. When the beam exits it makes an angle of θ = 107 degrees with respect to the initial beam (see figure). Part (a) Write an expression for the angle, ψ, between the mirrors. Part (b) Calculate this angle, ψ, in degrees.The first-order Bragg angle for a certain crystal is 12.1°. What is the second-order angle?
- ఆర Need the slope for that I GaAmp) vivolt) 2.6 1.15 2.8 1.22 3.3 1.44 4.7 1.78 5.4 2.34Q/4) The laser cavity length is 1 [m]. At one end a convex mirror with radius of curvature of 200 [Cm]. At the other end a concave mirror with radius of curvature of 0.1 [m]. Find if this cavity is stable.Q#03. (a) Show that the (hkl) plane is perpendicular to the [hkl] direction. (b) Discuss the Laue method for X-ray diffraction to evaluate the crystal structure and write its advantages over the other methods..