Which of the following statements about electron degeneracy pressure and neutron degeneracy pressure is true?
A) The life of a white dwarf is an ongoing battle between electron degeneracy pressure and neutron degeneracy pressure.
B) Both electron degeneracy pressure and neutron degeneracy pressure help govern the internal structure of a main-sequence star.
C) Electron degeneracy pressure is the main source of pressure in white dwarfs, while neutron degeneracy pressure is the main source of pressure in neutron stars.
D) In a black hole, the pressure coming from neutron degeneracy pressure is slightly greater than that coming from electron degeneracy pressure.
Question 2
Why are relatively few details known about the life that existed on Earth prior to a few hundred million years ago?
A) Nearly all life at that time was microscopic, making it much more difficult to identify.
B) Many rocks have been transformed by high heat and pressure, destroying any fossils they contained.
C) Older rocks are more rare than younger rocks because of geologic processes like subduction.
D) All of the above
Taking a Patient's Blood Pressure
Electron Microscope Images of a Diatom
a) Using a fist to support thumb pressure b) Using thumb-beside-thumb pressure
Spinal changes caused by osteoporosis. Use light pressure and gentle stretches only with frail or ...
Blood Pressure (BP)
An electron micrograph showing transcription of a gene.