Un cañón lanza una bala con una velocidad inicial de 60m/s y con un ángulo de inclinación de 30°, encontrar: a) las velocidades iniciales en cada eje. b) la altura máxima que alcanza. c) el alcance horizontal. d) al cabo de 6s que altura lleva. AYUDENME POR FAVOR!!!

Which is not true about oxygen-17 and oxygen-18?

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?

The particles that are found in the nucleus of an atom are