In the proton-proton cycle, the positron is:
A) massless.
B) a spin conservation particle.
C) an anti-electron.
D) the chief means energy reaches the photosphere.
E) intermediate between the proton and neutron in mass.
C
You might also like to view...
A standard candle is
A) a 7-cm-long wax candle. B) a light source of known luminosity. C) another name for a main-sequence star. D) another name for a barred-spiral galaxy.
Dust is an important part of the nebular theory of solar system formation because dust is needed to explain:
A) how the inner planets came to be rocky bodies. B) how the outer planets came to be gaseous bodies. C) how the initial cloud cooled enough to collapse. D) how the initial cloud heated as it contracted. E) why the icy bodies are located so far from the Sun.
A light bulb with a tungsten filament is attached to a source of variable voltage. As the voltage is increased on the bulb,
a. the bulb's resistance decreases. b. the bulb's resistance increases. c. the current in the bulb decreases. d. the power dissipated remains constant.
The natural tendency of an object to remain at rest or in uniform straight-line motion is called ______________
Fill in the blank(s) with correct word