Two motorcycles are located 10.00 km away from a circular radar antenna (diameter of 1.90 m and radiates at a frequency of 16.0 GHz). How close together could the motorcycles be and still be detected as two objects? (c = 3 x 10 ms).
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- 2. A satellite orbiting the Earth is powered by photovoltaic (“solar”) panels that convertlight energy to electricity with a conversion rate of 15.0%. Telemetry from the satelliteindicates that the panels are supplying a peak power output of 3.60 kW, and the specificationsof the panels state that they have 16 m^2 of light-collecting surface area. The radius of theSun and its distance from Earth have long been known to be 6.96 ×10^8 m and 1.50 ×10^11m, respectively. Assume the Sun radiates approximately as a blackbody and calculate thesurface temperature of the Sun.44.06522=9.53(0.23+0.0045(T-293.15)) Solve for T temp2.37. The 2-line elements for satellite NOAA 18 are as follows: NOAA 18 1 28654U 05018A 05154.51654998-.00000093 00000-0-28161-4 0 189 2 28654 98.7443 101.8853 0013815 210.8695 149.1647 14.10848892 1982 Determine the approximate values of (a) the semimajor axis, and (b) the latitude of the subsatellite point at epoch.
- B) Using the properties of F.T., Calculate the F.T. of the signal sin (3πt) sin (5πt) t² x(t) = 5-Scientists use laser range finding to measure the distance to the moonwith great accuracy. A very brief (100 ps) laser pulse, with a wavelengthof 532 nm, is fired at the moon, where it reflects off an array of 100 4.0-cm-diameter mirrors placed there by Apollo 14 astronauts in 1971. The reflected laser light returns to earth, where it is collected by a telescope and detected. The average earth-moon distance is 384,000 km. The laser beam spreads out on its way to the moon because of diffraction, reaching the mirrors with an intensity of 300 W/m2. The reflected beam spreads out even more on its way back because of diffraction due to the circular aperture of the mirrors.a. What is the round-trip time for the laser pulse to travel to the moon and back?b. If we want to measure the distance to the moon to an accuracy of 1.0 cm, how accurately must the arrival time of the returning pulse be measured?c. Because of the spread of the beam due to diffraction, the light arriving at earth from one…b). Tuo dlentical traveling in stinazinterfer with Cach other. f Jesultant weive hes wd ves Parch with cmplitid e of g.9 mm some diseation chol melium along stoetchel 9.4mm, what is phase di fferen ce b/ew two Wolves?
- 1. If the (volt/DIV) =5 and the input = (20v) plot and discus the result. 2. If the (time /DIV) =1usec and the input frequency is (100KHZ, 1MHZ, 10MHZ) plot and discus the result. 3. If the (volt/DIV) =2 and (time/DIV) =0.2msec and the input (4v peak with f= 5KHZ) plot the result.2. A light source has energy distributed in the range of the wavelength from 1 = 600 to 600.018 nm and contains many fine spectral lines. The minimum interval of two fine spectral lines is Al = 6 x 10-4nm. In order to fully analyze this light source using a spectrometer with a fixed Fabry- Perot (FP) etalon (as shown in Slide 13 of Lecture 12), ask: a) What is the maximum separation distance of this FP etalon (L)? b) If two FP etalons have the same separation distance, but different reflectance R1 = 0.89 and R2 = 0.92, respectively, please compute resolving power of two FP etalons and determine which one can be used in this application.W (1) Messenger A PRELIM EXAM M Inbox (1) - 2223626@slu.edu.ph A classroom.google.com/u/1/c/NDQ5MTIxMjc2MzAz/a/NDCZNJK4MZY4NDM2/details X- 3X – 10 f(x) = 2991 EnggMath 2 Differential X+2 h. 10:30-11:30 TTHSF x' +x? –17x+15 f(x)= i. х? + 2х-15 O PRELIM Assigned 5. Using the FOUR-STEP rule in evaluating derivatives, find dy/dx in each of the functions given below. Show complete solution. ROMMEL ACOSTA 95 points dd or create X y = X-1 j. k as done y = Vx+1 k. 6. Using differentiation formulas, write the derivative with respect to x of the following. Find the sum of A, B, and C or (A + B + C) = ? Missing letters may be assumed to be zero. nments to ROMMEL ACOSTA х3 — 1 y = 2x' +1 dy Ax' (x' – 1)° , thus, dx (2x" +1)° 2 Class comme I. dy_ (A+x) VBx Add a class comm 2 +=x12 +4, thus, 5 y = 2x"2 + 1/2 3 dx m. Page 2 I 3 + 10:25 AM Search the web and Windows 22/02/2022
- 15-15. Determine the power gain and beamwidth for an end-fire helical antenna with the following parameters: helix diameter = 0.1 m, number of turns = 10, pitch = 0.05 m, and frequency of operation = 500 MHz.Assume that you want to bounce a laser beam off the Moon. Assume the laser beam is TEM9,0 and that the Moon is a distance of 3.8 · 10$ meters from Earth. Calculate the following. (a) Assume that the initial beam waist of a CO, laser running on the 10.6 µm line is 15 cm. How large is the beam waist when the beam hits the Moon? What is the radius of curvature? (b) Assume that the initial beam waist of a CO, laser running on the 10.6 µm line is 1.5 meters. How large is the beam waist when the beam hits the Moon? What is the radius of curvature? (c) Repeat part (a) for an excimer laser operating at 254.0 nm; use the same beam waist. |(d) Repeat part (b) for an excimer laser operating at 254.0 nm; use the same beam waist. (e) From your answers to parts (a-d), speculate on what kind of laser and what type of associated optical system you would want to use in order to optimally bounce a laser beam off the Moon.E 22_Mat_Eng_Test_09_FeCph x poE 22_Mat_Eng_Test_08_phase × Po 22_Mat_Eng_Test_10_phase X po 22_Mat_Eng_Test_10_phase × 22_Mat_Eng_Test_07_diffusi x P 22_Mat_Eng_Test_07_diffusi x + O File | C:/Users/Asus/Downloads/material/22_Mat_Eng_Test_07_diffusion_23_03.pdf Q + D Page view A Read aloud T Add text V Draw E Highlight O Erase 03 18 of 25 Zjatt Application MUEGYETEM 1 7 8 2 • The diffusion coefficients for copper in aluminum at 500C and 600C are 4.8 · 10-14and 5.3 · 10-13 m²/s, respectively. Determine the approximate time at 500C that will produce the same diffusion result (in terms of concentration of Cu at some specific point in Al) as a 10 h heat treatment at • 600C. 68°F ENG 9:33 PM gb Cloudy US 5/10/2022