Awave is produced from a vibrating string on a violin. two observers are standing 20 m and 40 m away from the musician. the observer that is further away states that the violin sounds quiet but the other observer disagrees. what best explains the different experiences of the two observers?

a) the energy of the sound wave decreased as it moved away from the source.

b) the energy of the sound wave increased, then decreased as it moved away from the source.

What are the phases shown in a and d called?

2.22/3.33 points | previous answers tamucolphysmechl1 4.pre.002. ask your teacher my notes question part points submissions used on a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. it strikes a red glider that has mass 0.600 kg and that is initially at rest. after the collision, the blue glider is moving to the left with a speed of 2.40 m/s. (a) what are the magnitude and direction of the velocity of the red glider after the collision? magnitude 3.33 m/s correct: your answer is correct. direction correct: your answer is correct. (b) is this collision elastic?

Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?