You are walking along a small country road one foggy morning and come to an intersection. While you are crossing, you hear an ambulance siren. As a paramedic, you know that the siren sounds at a frequency of 9.07 kHz. But, as an amateur musician with perfect pitch, you can tell that the frequency you are hearing is actually 9.83 kHz. Is the ambulance moving toward or away from you

Which of the following represents an upright image? a. -do b. +m c. -m d. +do

Which force is most responsible for binding together an atom's protons and neutrons? electrostatic gravitational nuclear magnetic

Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?