a) After two half-lives, all radioactive nuclei in a substance will have decayed.
a) After two half-lives, all radioactive nuclei in a substance will have decayed.
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Transcribed Image Text:State which of the following statements are true and which are false:
a)
After two half-lives, all radioactive nuclei in a substance will have decayed.
b) A resistor R and a capacitor C connected in parallel combine as = + à
c)
A photon travels along multiple paths from a star to a Geiger counter.
d)
The brighter the light illuminating a photocathode, the higher the energy of the electrons
emitted.
e)
When a photon travels from a star to your eye, in its frame of reference the duration of its
journey and the distance travelled are both zero.
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