Which term best describes the change in frequency of waves when there is motion between the source of the waves and the observer?
a. the doppler effect
b. the avogadro effect
c. the motor wave effect
d. the wave frequency effect

Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.

Multiply or divide to make this english distance conversion. 174 inches = feet (14.5, 58, 2,088, 23)

What is a transverse wave? how do the particles in the medium move in relation to the energy of the wave? does this wave require a medium?