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z When multiple radio telescopes are used for interferometry, resolving power is most improved by increasing...
Telescopes that observe nonvisible types of light work on the same principles as visible telescopes, but...
Telescopes that observe nonvisible types of light work on the same principles as visible telescopes, but they might require different technologies. For instance, instead of lenses or mirrors, a radio telescope (such as the one in the figure) uses technology similar to the television satellite dish you might install on your roof. As with visible light telescopes, bigger radio telescopes yield greater light-gathering power and better angular resolution. However, the angular resolution (θ) of a telescope also depends on the...
Chapter 33, Problem 016 Large radio telescopes, like the one in Arecibo, Puerto Rico, can detect...
Chapter 33, Problem 016 Large radio telescopes, like the one in Arecibo, Puerto Rico, can detect extremely weak signals. Suppose one radio telescope is sensitive enough to detect a signal which lays down only 1.4 pW of power on an area of 4.0 x 101 m2. (a) What would be the total power that would be received by the antenna, assuming that its diameter is 400 m? (b) What would be the power of a source at 29000 ly distance...
The Very Large Array (VLA) is a set of 27 radio telescope dishes in Catron and...
The Very Large Array (VLA) is a set of 27 radio telescope dishes in Catron and Socorro counties, New Mexico (see figure below). The antennas can be moved apart on railroad tracks, and their combined signals give the resolving power of a synthetic aperture 36.0 km in diameter. (a) If the detectors are tuned to a frequency of 1.17 GHz, what is the angular resolution of the VLA? 8.689 µrad (b) Clouds of interstellar hydrogen radiate at the frequency used...
Chromatography Basics Multiple Choice: Answer the following multiple choice questions about Chromatography Basics (SHOW WORKING): 1) In...
Chromatography Basics Multiple Choice: Answer the following multiple choice questions about Chromatography Basics (SHOW WORKING): 1) In a given chromatographic column, A) different solutes behave as if there are a different number of theoretical plates for each. B) the number of theoretical plates is the same for all solutes. C) efficiency is improved by increasing plate height. 2) What useful information can be found from a Van Deemter plot? A) The selectivity factor B) Optimum mobile phase flow rate C) Optimum...
1. Is the current through the power supply and each bulb (in Table 2) increasing or...
1. Is the current through the power supply and each bulb (in
Table 2) increasing or decreasing with increasing the number of
bulbs in Fig. 5 (a) to Fig. 5 (d)? Why
2. Is there any correlation between the current through each
bulb and observed bulbs' brightness? Why?
3. Are the lights at your home connected in parallel? Why?
4. The maximum output current from the DC power supply #1 is 2
A. What is the maximum number of light...
Given that z is a standard normal random variable, find z for each situation (to 2...
Given that z is a standard normal random variable, find z for each situation (to 2 decimals). a. The area to the left of z is 0.2119. (Enter negative value as negative number.) -0.80 g b. The area between – z and z is 0.903. 1.66 ♡ c. The area between - z and zis 0.2052 d. The area to the left of z is 0.995 2.58 g e. The area to the right of z is 0.695. (Enter negative...
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....
EW each wire maximumn Why must electricians be circuits that will run motors2 careful when calculating power require...
EW each wire maximumn Why must electricians be circuits that will run motors2 careful when calculating power requirements tor low Many motors draw awhile, and the circuias must be atje to handle tins e power when a have been running st. y first start up esistance when they For many motors so the circuits mun Many motors draw pow the longer they a handle lirg, the more s a cyclical fashine ount of they desn, ork at all, b e...
please please help with all of them no thorough explanation needed! 5. Select the most appropriate...
please please help with all of them no thorough explanation needed! 5. Select the most appropriate answer. When using a dichotomous key outside to identify unknown organisms one should A. not remove parts of the plant or disrupt the ecosystem B. be aware of hazards such as ticks and poison ivy C. should write down the steps followed on the key. D. Be aware that your best attempts to identify a specimen might be disrupted by the presence of sexual...
11) 20pts. The zener limiter circuit s V R often used as a low power voltage...
11) 20pts. The zener limiter circuit s V R often used as a low power voltage regulator for a DC power supply. This circuit is an example in load A) Find R so that the maximum power dissipated in the zener diode is Po for any possible value of Road given P, Vin and B) What is the maximum current that the load can draw before the zener stops regulating the voltage? C) When the circuit is regulating the voltage...
Chapter 33, Problem 016 Large radio telescopes, like the one in Arecibo, Puerto Rico, can detect extremely weak signals. Suppose one radio telescope is sensitive enough to detect a signal which lays down only 1.4 pW of power on an area of 4.0 x 101 m2. (a) What would be the total power that would be received by the antenna, assuming that its diameter is 400 m? (b) What would be the power of a source at 29000 ly distance...
1. Is the current through the power supply and each bulb (in
Table 2) increasing or decreasing with increasing the number of
bulbs in Fig. 5 (a) to Fig. 5 (d)? Why
2. Is there any correlation between the current through each
bulb and observed bulbs' brightness? Why?
3. Are the lights at your home connected in parallel? Why?
4. The maximum output current from the DC power supply #1 is 2
A. What is the maximum number of light...
Given that z is a standard normal random variable, find z for each situation (to 2 decimals). a. The area to the left of z is 0.2119. (Enter negative value as negative number.) -0.80 g b. The area between – z and z is 0.903. 1.66 ♡ c. The area between - z and zis 0.2052 d. The area to the left of z is 0.995 2.58 g e. The area to the right of z is 0.695. (Enter negative...
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....
EW each wire maximumn Why must electricians be circuits that will run motors2 careful when calculating power requirements tor low Many motors draw awhile, and the circuias must be atje to handle tins e power when a have been running st. y first start up esistance when they For many motors so the circuits mun Many motors draw pow the longer they a handle lirg, the more s a cyclical fashine ount of they desn, ork at all, b e...
11) 20pts. The zener limiter circuit s V R often used as a low power voltage regulator for a DC power supply. This circuit is an example in load A) Find R so that the maximum power dissipated in the zener diode is Po for any possible value of Road given P, Vin and B) What is the maximum current that the load can draw before the zener stops regulating the voltage? C) When the circuit is regulating the voltage...
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