Answer:
Radioactive decay is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive. Three of the most common types of decay are alpha decay, beta decay, and gamma decay, all of which involve emitting one or more particles or photons.
Explanation:
Answer:
His dad knows about gravity and, unless gravity was not working, anything with mass will be pulled back to earth
Explanation:
:)
I believe the answer is C. (must be touching the object)
Someone please correct me if I am wrong.
