Could someone please help me..? The effect an electric charge has on other charges in the space around it is the charge's:
friction
electric current
electric field
induction

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?

If anyonee has done the momentum lab practical in physics can you give me the answers i am s lostt rnn : (

A51 kg woman skis down a hill and her kinetic energy is 9.96e4 j. what is her speed?