The angular size of a black hole varies proportionately with its mass.
a) use your computed mass (from p3c above) to compare the angular linear sizes, in au, of the 6.5 billion m⊙ black hole in m87 and sgr a*.
b) which object subtends the greater apparent size and would therefore be easier to study?
c) what other factors complicate the study of sgr a*?

What statements accurately describe atoms

Power can be defined as a. the distance over which work was done. b. how much work can be done in a given time. c. all the work in an given area. d. the energy required to do work.

It is reasonable to assume that the bulk modulus of blood is about the same as that of water (2.2 gpa). as one goes deeper and deeper in the ocean, the pressure increases by 10000 pa for every meter below the surface. if a diver goes down 80.0 m in the ocean, by how much does each cubic centimeter of her blood change in volume? give the answer in cubic centimeters (actually one cubic centimeter equals one milliliter).