HURRY IM TIMED Which two elements make up water?
oxygen and phosphorus
oxygen and hydrogen
hydrogen and sulfur
hydrogen and phosphorus

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?

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?