Which of the following statements is FALSE?

Air temperatures over the ocean remain fairly constant throughout a 24-hour cycle.
Air temperatures over the land can vary significantly throughout the day.
Air temperatures over land reach their highest values in the mid-afternoon.
Air temperatures over land are always higher than air temperatures over the ocean.

Can anybody me with this? ? (picture included.)

=force × distance a. work b. velocity c. pressure d. 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?