Which of the following statements about electron degeneracy pressure and neutron degeneracy pressure is true?
A) 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.
B) Both electron degeneracy pressure and neutron degeneracy pressure help govern the internal structure of a main-sequence star.
C) The life of a white dwarf is an ongoing battle between electron degeneracy pressure and neutron degeneracy pressure.
D) In a black hole, the pressure coming from neutron degeneracy pressure is slightly greater than that coming from electron degeneracy pressure.
A) 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.
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If a 600-W heater carries a current of 4.0 A, what is the voltage across the ends of the heating element?
a. 2 400 V b. 150 V c. 300 V d. 0.0067 V e. 4.9 V
You can increase the internal energy of a gas by heating it or by compressing it
Indicate whether the statement is true or false
A girl throws a rock horizontally with a speed of 12.0 m/s from a bridge. It falls 2.28 s before reaching the water below
(a) How high is the bridge from the water below? (b) How far horizontally does the rock travel before striking the water?
When the surface of a metal is exposed to blue light, electrons are emitted. If the intensity of the blue light is increased, which of the following things will also increase?
A) the number of electrons ejected per second B) the maximum kinetic energy of the ejected electrons C) the time lag between the onset of the absorption of light and the ejection of electrons D) the work function of the metal E) all of the above