Aferris wheel is a vertical, circular amusement ride with radius 8.5 m. riders sit on seats that swivel to remain horizontal. the ferris wheel rotates at a constant rate, going around once in 10.9 s. consider a rider whose mass is 71 kg. at the bottom of the ride, what is the parallel component of the rate of change of the rider's momentum?

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?