Using the example of an ambulance, explain the Doppler Effect. Infer why the doppler effect can or cannot occur in all waves
2 quarter at the bottom of a fountain,

Describe the path of a ray that approaches a mirror parallel to the principal axis.

An ideal polarizer with its transmission axis rotated 30 degrees to the vertical is placed in a beam of unpolarized light of intensity 10w/m^2. after passing through the polarizer, what is the intensity of the beam? a. 8.7 w/m^2 b. 7.5 w/m^2 c. 5.0 w/m^2 d. 10 w/m^2 e. 2.5 w/m^2

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?