A stone drops from a 5m tall cliff. If all its potential energy gets converted into kinetic energy. Calculate the speed of the stone just before it touches the bottom of the cliff.(g=10m/s^2)​

What are “like terms”? why can we only add like terms?

The american academy of pediatrics wants to conduct a survey of recently graduated family practitioners to assess why they did not choose pediatrics for their specialization. provide a definition of the population, suggest a sampling frame, and indicate the appropriate sampling unit.

If set d is not the empty set but is a subset of set e, then which of the following is true? d ∩ e = d d ∩ e = e d ∩ e = ∅