Un auto va frenando y reduce su velocidad de 54 km/h a 25.2 km/h al recorrer 90 m. Calcula: a) ¿Cuál será su aceleración?
b) ¿Qué distancia recorrerá antes de alcanzar el reposo?

Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture

What happens to the atomic radius when an elctron is lost

Harry lives in a city, and he has a lung condition known as asthma. on certain days, harry has to stay inside because pollutants in the air make it difficult for him to breathe. which of these pollution sources are nonpoint sources that might bother harry if he goes outside? choose the two that apply.