An B flat is played on a french horn, whose frequency is 466Hz. 1. what is the period of one vibration of this tone?
2. as the sound leaves the instrument at a speed of 343m/s, what is the wavelength?

Which two particles are found in the center of an atom

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Two carts, one of mass 2m and one of mass m, approach each other with the same speed, v. when the carts collide, they hook together. assume that positive momentum is to the right. which graph best represents the momentum of both carts over time, before and after the collision?