Una esfera de hierro de 3 cm de radio se deja caer en un estanque lleno de agua de 120 cm de profundidad. Calcular: a) Peso de la esfera
b) Empuje
c) Fuerza resultante
d) Aceleración de la esfera
e) Tiempo que tarda en llegar al fondo

Apiano tuner uses a tuner to create a tone of 5.00 x 10² hz. when a key on the piano is struck he hears 5 beats per second. what is a possible frequency of vibration for the piano string? 2500 hz 1300 hz 605 hz 495 hz

Auniform brick of length 25 m is placed overthe edge of a horizontal surface with a maximum overhang of 12.5 m attained withouttipping. now two identical uniform bricks of length25 m are stacked over the edge of a horizontalsurface. what maximum overhang is possible forthe two bricks (without tipping)? answer in units of m.

Ajogger runs 5.0 km on a straight trail