When you speak, your voice is produced by your vibrating vocal chords. these vibrations produce the which carry through the air

Avalue that describes how heavy an object is and is related to the force of gravity is

Explain to someone who knows nothing about fossils the study of invertebrate paleontology and how it scientists understand the history of the earth. be sure your explanation contains a minimum of two complete sentences.

Física: un futbolista patea hacia el arco con una velocidad de 15m/ah, calcular: a)el alcance para un ángulo de tiro de 25? , b) el tiempo que el balón permanece en el aire.