Sound proof tiles are made of a porous surface (with lots of holes) so that the sound is not transmitted from room to room. this is a good example of sound wave energy. a-absorption b-amplification c-diffraction d-refraction ( answer )

Aparticle initially located at the origin has an acceleration of = 2.00ĵ m/s2 and an initial velocity of i = 8.00î m/s. find (a) the vector position of the particle at any time t (where t is measured in seconds), (b) the velocity of the particle at any time t, (c) the position of the particle at t = 7.00 s, and (d) the speed of the particle at t = 7.00