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What is the wavelength of maximum intensity (in nm) and the total energy emitted (in J/s/m2) by a celestial object at 7 K above absolute zero? wavelength of maximum intensity? 414285.71 Total Energy? -----

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SKETCH: (Name and label each parts of CLEVELAND OPEN-CUP FLASH POINT TESTER). SYD-3686 克利夫兰开口闪点体验器 INSMANce sman

PMMC instruments can be used as a fluxmeters by

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Hello. I need help solving ( 9 & 10) with explanations, it goes with the diagram above. Please and thank you.

A mole contains 6.02 * 1023 particles (atoms, molecules, etc.). If you wanted to reach Alpha Centauri (4.367 light-years away) by creating a strand of carbon atoms (0.3 nm diameter), how many moles of carbon would you need? (Note: 1 light-year = 9.46 * 1012km)

Given the figure, determine the Vernier caliper measurement. Express your answer in centimeter. The red mark indicates where the main scale and Vernier scale coincides. * 8. 1/128in 3 5.. 6, 7, 80 0.05mm ói 2 3 4 5 6 7 8 9 10 O 2.52 0.20 O 2.70 О 2.20

2.9) Explain how astronomers might use spectroscopy to determine the composition and temperature of a star.

MasteringPhysics: HW07 bMy Questions bartleby X X C G session.masteringphysics.com/myct/itemView?assignmentProblemID=121806539 Purchase sites b BartleBy Pphysics homework Apps physics book in LinkedIn Sapling organic Pt Dynamic Periodic T... School Poll Everywhere PHYS2110/2109-004_2019F Jennifer KHW07 2 of 6> Circular Launch Constants Periodic Table A ball is launched up a semicircular chute in such a way that at the top of the chute, just before it goes into free fall, the ball has a centripetal acceleration of magnitude 2 g. (Figure 1 Part A How far from the bottom of the chute does the ball land? Your answer for the distance the ball travels from the end of the chute should contain R. View Available Hint(s) Hint 1. Speed of ball upon leaving chute Hint 2. Time of free fall How long is the ball in free fall before it hits the ground? Express the free-fall time in terms of R and q. View Available Hint(s) Templates Symbols undo rgo Yeset keyboard shortcuts help tr= Figure <1 of 1…

1.1) In a star's core the average mass number for ions which are not hydrogen or helium is 10. The mass fractions of hydrogen is 0.60, of helium is 0.38, and all other elements is 0.02. Calculate the average ion mass in units of mH. 1.2) Explain two assumptions behind the Kelvin-Helmholtz timescale. 1.3) In the outer core of a massive star the temperature is 108 K. The mean particle weight is u = 0.62. Calculate the density of this region if the radiation pressure is equal to the thermal pressure. 1.4) For temperatures around 1.5 x 10' K in a stellar core, describe why it is hydrogen instead of heavier ions which undergo fusion. Also, when the temperature is higher, describe why higher mass ions can undergo fusion. 1.5) Describe two possible causes of convective instability in the outer regions of a low mass star.

Models of the first star-forming clouds indicate that they had a temperature of roughly 150 K and a particle density of roughly 400,000 particles per cubic centimeter at the time they started trapping their internal thermal energy. ▼ Part A Estimate the mass at which thermal pressure balances gravity for these values of pressure and temperature. Express your answer in kilograms. —| ΑΣΦ Mcloud Submit Part B = Mcloud How does that mass compare with the Sun's mass? Express your answer in solar masses. Submit Request Answer = ΤΙ ΑΣΦ Request Answer ? ? kg MSun Review

Please drae FBD for all three ThANK YOU

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10:49 LTE O < All iCloud Imagine that you are observing a star and you find the wavelength of peak emission for the star to be 400 nm. What would the wavelength of peak emission be for a new star that has a surface temperature that is a quarter of the original star? Using the same pair of stars from the first question, ● how does the luminosity (the energy output) of each star compare if we assume that both stars are the same size? (Please provide a specific factor or proportion) What type of radiation/light (from the electromagnetic spectrum) is each star emitting? Now imagine that we determine that the wavelength of peak emission of the original star was determined to be bluer than it should be based on other observations. Would this indicate that the star is moving towards us or away from us relatively speaking through space? 0

If the distance to Star C is 16 pc, what is the value of its distance modulus (m-M)?

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The temperature of a star is 4990 K. Calculate the power per unit area radiated by the star in 519 nm to 525 nm range. (a) 0.230 MW/m (b) 0.384 MW/m (c) 0.390 MW/m2 (d) 0.220 MW/m2

Answers for FR-3 shown below.

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Given the figure, determine the Vernier caliper measurement. Express your answer in centimeter. The red mark indicates where the main scale and Vernier scale coincides. 1/128in 5, 7 80 0.05mm ói 2 3 4 5 6 7 8 9 1o O 3.9225 O 3.9045 3.645 O 3.945

Given the figure, determine the Vernier caliper measurement. Express your answer in centimeter. The red mark indicates where the main scale and Vernier scale coincides. 1/128in 51 8. 0.05mm ói 2 3 4 5 6 Ż 8 ģ 1O O 3.945 O 3.645 O 3.9045 3.9225

Could I please get help on number 2 as I’m really stuck :(

Can you explain how to get Fnet and Enet on the diagram.

Barnard’s star is an orange star in the constellation Ophiuchus. It has the largest known proper motion (10.3577"/yr) and the fourth-largest parallax angle (0.54901"). In the spectrum of this star, the H alpha line is observed to have a wavelength of 656.034 nm when measured from the ground. a. Determine the radial velocity of Barnard’s star. b. Determine the transverse velocity of Barnard’s star. c. Calculate the speed of Barnard’s star through space.