Question 3 of 10 Which point on the standing wave is the result of the constructive
interference of two crests?
B
D
A. A
O O o
B. B
C. C
D. D

Using the given data table, calculate the acceleration of the skateboarder. you can use either form of the equation below?

Will you chech and finish these for me, because i am stumped with them.

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?