That's right, the correct answer is
<span>A) The isotopes have a long half-life and only remain radioactive for a long time period
The half life of an isotope is the time it takes for the amount of the sample to reduce to half of its initial value. If an isotope has a long half-life, it means it takes a long time to reduce down to a significant level, so it will remain radioactive for a long time period.</span>
Answer:
C
Explanation:
Graph C represents a linear function. As the height increases by 1 meter, the gravitational energy increases by 10 joules respectively.
Answer:
The gravitational force is much larger than the electrical force for any distance between the particles.
Explanation:
B. Convection. (extra words so I make the word count)
Answer:
0
Explanation:
Forces with equal magnitudes and opposite directions cancel each other out, so the net force is 0.
