Physics Galaxy Discussion Questions Solutions Fixed Link

Many discussion questions can be solved by returning to fundamental laws, such as Newton's Laws or Maxwell's Equations, rather than complex derived formulas.

Thus $M \approx 10^11 M_\odot \times (2/1)^2 \times 0.5^-1 \times (0.9)^-1$? Let’s approximate: physics galaxy discussion questions solutions

The maximum steady luminosity is set by radiation pressure balancing gravity (Eddington limit): [ L_\textEdd = \frac4\pi G M_\textBH m_p c\sigma_T \approx 1.3 \times 10^38 \left(\fracM_\textBHM_\odot\right) \text erg/s ] For (M_\textBH = 10^8 M_\odot), (L_\textEdd \approx 10^46) erg/s. Over (10^8) years, total energy released (\sim 10^61) ergs – consistent with observations. Many discussion questions can be solved by returning

Open Volume 1. Go to the "Centre of Mass" discussion questions. Find the problem about the man walking on a boat. Do not look at the solution. Draw the system. Watch the center of mass. The universe will make sense. Over (10^8) years, total energy released (\sim 10^61)

Gravitational potential energy of accreting matter.