Sound can be by soft materials like cloth and by traced materials like steel.

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false

If anyonee has done the momentum lab practical in physics can you give me the answers i am s lostt rnn : (

An alpha particle with kinetic energy 12.5 mev makes a collision with lead nucleus, but it is not "aimed" at the center of the lead nucleus, and has an initial nonzero angular momentum (with respect to the stationary lead nucleus) of magnitude l = p0 b, where p0 is the magnitude of the initial momentum of the alpha particle and b=1.40×10−12 m. (assume that the lead nucleus remains stationary and that it may be treated as a point charge. the atomic number of lead is 82. the alpha particle is a helium nucleus, with atomic number 2.) what is the distance of closest approach?