2026 FULL QUESTIONS ANSWERS
COMPREHENSIVE STUDY GUIDE GRADED
A+
⩥ Isotope A has a half-life measured in minutes, where as isotope B he
has a half-life of millions of years. Which is more radioactive?.
Answer: Isotope A
⩥ In the fission of uranium, a chain reaction is caused by.
Answer: ejected neutrons
⩥ Fusion process.
Answer: Two light nuclei are combined into a heavier one
⩥ Rate of radioactive decay is proportional to the.
Answer: Number of unstable nuclei
⩥ All isotopes decay in the same pattern. What is the main difference in
the graphs showing the rate of decay for different radioactive isotopes?.
Answer: The time it takes for a half-life to occur
,⩥ During a second half-life, the original material has decayed.
Answer: 75%
⩥ The lifetime of unstable nuclei is.
Answer: Unlimited
⩥ electric field.
Answer: a field of force surrounding a charged particle, force per unit
charge
⩥ electric potential.
Answer: energy per unit charge
⩥ Generator.
Answer: Converts mechanical energy into electrical energy
⩥ Motor.
Answer: Electrical energy to mechanical energy
⩥ An object that completes 100 vibrations in 5 seconds has a period of.
Answer: none of these
, ⩥ the distance from the top of one wave crest to the next is called the.
Answer: wavelength
⩥ in a transverse wave, the medium vibrates in a direction that is.
Answer: perpendicular to the direction the wave travels
⩥ during a single period, the distance traveled by a wave is.
Answer: one wavelength
⩥ the intensity of a sound wave depends on the.
Answer: amplitude of the wave
⩥ A piano, violin, or guitar uses the resonance of a wooden soundboard
to.
Answer: amplify the sound
⩥ the beat frequency produced when a 240 hertz tuning fork and a 246
herts tuning fork are sounded together is.
Answer: 6 Hz.
⩥ in general sound travels most rapidly in ___, less rapidly in ___, and
even less rapidly in___..
Answer: solid, liquids, gases