Zeros between a decimal point and a non zero number are significant

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these

Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.

What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?