Desde una ventana de un edificio situada a 20 m del suelo se lanza una pelota con una velocidad de 15 m/s formando un ángulo de 600

con la horizontal. Determinar:

a) ¿Cuál es la altura máxima alcanzada?
b) calcular el tiempo en alcanzar el suelo y el alcance

While goofing off at the ice skating rink, a student takes off her shoes and places each of them on the ice. her friend, a hockey player, then shoots a hockey puck at each shoe. the first puck immediately comes to rest after it collides with the left shoe. the second puck rebounds after it collides with the right shoe. if each hockey puck has the same incoming speed, which shoe has greater speed after the collision? the right shoe. both shoes have the same speed. the left shoe.

How to tell if a molecule is polar or nonpolar with electronegativity

Does heating a metal wire increase or decrease its electrical resistance? why?