FOLLOW: (express your answer in the proper SI unit and WITHOUT SCIENTIFIC NOTATION)In Exercise 12.4 of your book, University Physics 15th edition (see End of the Chapter 12 section), what is the answer for sub-item (b) if the radius of the neutron star is 59.531 km? 12.4 (a) What is the average density of the sun? (b) What is the av-erage density of a neutron star that has the same mass as the sun but aradius of only 20.0 km?125unifernn lood cnhere ond o uniform ol1uminunn ephore bove

Given, Mass of sun = Mass of neutron star = M = 1.989 × 1030 kg Radius of neutron star =…

Answered: In Exercise 12.4 of your book,…

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A main sequence star of mass 25 M⊙has a luminosity of approximately 80,000 L⊙. a. At what rate DOES MASS VANISH as H is fused to He in the star’s core? Note: When we say “mass vanish '' what we really mean is “gets converted into energy and leaves the star as light”. Note: approximate answer: 3.55 E14 kg/s b. At what rate is H converted into He? To do this you need to take into account that for every kg of hydrogen burned, only 0.7% gets converted into energy while the rest turns into helium. Approximate answer = 5E16 kg/s c. Assuming that only the 10% of the star’s mass in the central regions will get hot enough for fusion, calculate the main sequence lifetime of the star. Put your answer in years, and compare it to the lifetime of the Sun. It should be much, much shorter. Approximate answer: 30 million years.
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QUESTION 10 In Exercise 12.4 of your book, University Physics 15th edition (see End of the Chapter 12 section), what is the answer for sub-item (b) if the radius of the neutron star is 10.408 km? (express your answer in the proper SI unit and without scientific notation)
High energy cosmic rays from space hit the nitrogen in the atmosphereand convert it from nitrogen (N14) into carbon (C14). This produces a steadyconcentration of C14 in the atmosphere once the decay rate of the C14 back intoN14 matches the conversion rate from the cosmic ray flux (which is assumedto be constant for reasons you can ask me about if you want).a) What kind of radiation (what kind of particle) does the C14 emit when it decays? Tellme how you know?b) The concentration of C14 in plants (and animals) comes into equilibrium with the atmosphere because living things use the ambient carbon to make their cellular structures.However, once a plant dies, it no longer consumes C14. The C14 starts to decay away—allowing us to calculate when the plant died because the C14/C12 ratio doesn’t match theatmosphere. If the half life of C14 is 5000 years, what is the age of a piece of charcoal froma site from the Clovis peoples of North America if the concentration of C14 is 15% of…
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consider plutoz diameter and mass. (2374)km & (1.303E22kg) and day which js 6.4 dayz long. FIND: 1. please elaborate how would you get the answer to the escappe vel0city from plut0. 2. we would need to find the minimum energy required for an aircraft or ship of some sort with mass (525kg) to escape this planet.. 3. we would also need to find the t0tal energy for a complete orbit around the planet with an airship with a same mass (525) and an altitude of 224 km
Needs Complete solution with 100 % accuracy don't use chat gpt or ai please plz plz plz plz.
Question B1 [This question will required roughly two single-sided A4 pages to answer.] Consider a hypothetical, spherically symmetric star of mass M and radius R, for which the den- sity profile is represented by p(r) = Pc [1 − (r/R)²], where pc is the central density and r is the radial distance from the center of the star. a) If the star is in hydrostatic equilibrium, by considering the forces acting on a volume ele- ment, show that the following expression must apply: dP dr Gm(r) p 12 where P is the pressure as a function of radial position and m(r) is the mass interior to the radius r. b) For the hypothetical star, with the given density as a function of radius p(r) = pc [1-(r/R)²], show that m(r) can be written as m(r) = 1½πr³ p 31.2 5R² c) Show that the average density p of the star (i.e., total mass divided by total volume) is given by p = 0.4pc. d) e) Given that the pressure is zero when r = R, show that the central pressure is given by Pe= 15 G M² 16π R4 ΜΗ The star is…