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- How did you get R = (u ^ 2 * sin (2 * theta)) / g?The answer is already shown, I am just confused about the steps. On part a, how does the 3.1447 go to 4.94Re? and then h=3.94Re and then 25097800m? On part b, where does the 2.5 come from? please solve in simpler steps, thank you.Calculate the amount of radiation emitted for a unit surface (2 m2) for black ball at 53°C and £≈0.96 Express your answer SI units (in W).
- Why the roller coaster loops are tightly curved at the top. Explain with proper reasoning.please help me with this, its a pracitice problem, NOT GRADED, DOUBLE CHECK ANSWERS, previous tutors got it wrong there are 2 parts please help with both,Suppose we represent an ordinary star as a uniform solid rigid sphere. The star’s initial radius is 644000 km (comparableto the size of our sun). After it collapses, forming a neutron star, its final radius is only 18.3 km! If the original starmakes one complete rotation about its axis once per month (every 30 days), find the neutron star’s period of rotationjust after the original star has collapsed.Tafter = (in s)
- DISREGARD THE BLACKLINES PLEASE HELPDistances to the nearest stars (up to 500 ly away) can be measured by a technique called parallax, as shown . What are the angles θ1 and θ2 relative to the plane of the Earth’s orbit for a star 4.0 ly directly above the Sun?Also, Many astronomers believe that the massive object at the center of the Milky Way galaxy is a black hole. If so, what is its Schwarzschild radius Rs?