Match the following phases of stellar evolution to its characteristic. black hole
red giant
black dwarf
brown dwarf
white dwarf

does not undergo hydrogen fusion

has an outer shell of burning hydrogen
and a core of helium

a white dwarf that has lost all its energy

has a core of carbon that is not massive
enough to fuse

formed from the collapse of a white dwarf beyond 1.5 solar masses

Which of the following is the result of the nuclear weak force? the instability of large nuclei the repelling force between positively charged protons the structure of the atom certain types of nuclear decay

Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?

An electron is traveling with initial kinetic energy k in a uniform electric field. the electron comes to rest momentarily after traveling a distance d. (a) what is the magnitude of the electric field