Se dinamita una roca la cual se fragmenta en tres partes: m1= 12kg, m2= 25 kg y m3= 8 kg. Las dos primeras salen disparadas formando entre sí un ángulo de 50grados, con rapideces v1= 20 m/s y v2= 14 m/s. Determina: magnitud y dirección de la velocidad y la cantidad de movimiento del tercer fragmento: Utiliza un sistema de coordenadas rectangulares.

What is the role of the ocular lens?

If the new moon happens on january 15th, what shape will it be on february 6th?

Consider a uniformly charged ring in the xy plane, centered at the origin. the ring has radius a and positive charge qdistributed evenly along its circumference. a)what is the direction of the electric field at any point on the z axis? . b)what is the magnitude of the electric field along the positive z axis? use k in your answer, where k=14πϵ0. d)the ball will oscillate along the z axis between z=d and z=−d in simple harmonic motion. what will be the angular frequency ω of these oscillations? use the approximation d≪a to simplify your calculation; that is, assume that d2+a2≈a2. express your answer in terms of given charges, dimensions, and constants