Question

X is 5 ft tall and he notices that he casts a shadow that's 3 ft long. He then measure that the shadow cast by his school building is 30 ft long. How tall is the building ?​

Answer 1

Step-by-step explanation:

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.