Someone, check my work a boy lifts a weight of 75 n from the floor to the top of a table, a vertical distance of 6.0 meters. compute the increase in the potential energy of the weight. remember to include your data, equation, and work when solving this problem. this is what i did, did i do it correctly? m= 75n g = 9.8 h = 6.0 meters gpe = mgh gpe = 75 * 9.8 * 6.0 gpe = 4,410j

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?