Based on the images seen here, identify which phase of matter would transmit sound waves the fastest, and why? a) the gas would transmit the fastest because the particles move the fastest. b) the solid would transmit the fastest because the particles are closest together. c) the liquid would transmit the fastest because the particles are the most freely moving. d) the gas would transmit the fastest because there are the fewest particles to interfere with the waves.

Aparticle of mass m is projected with an initial velocity v0 in a direction making an angle α with the horizontal level ground as shown in the figure. the motion of the particle occurs under a uniform gravitational field g pointing downward. (a) write down the lagrangian of the system by using the cartesian coordinates (x, y). (b) is there any cyclic coordinate(s). if so, interpret it (them) physically. (c) find the euler-lagrange equations. find at least one constant of motion. (d) solve the differential equation in part (c) and obtain x and y coordinates of the projectile as a function of time. (e) construct the hamiltonian of the system, h, and write down the hamilton’s equations (canonical equations) of motion.