The atmospheric pressure reaches 76 cm Hg at sea level. If the atmosphere pressure
decreases approximately 10 mm Hg as we rise up 120 m above sea level, the height of
a hill which the reading of mercury barometer at its top was 70 cm Hg 1S *
(a) 520 m.
b 680 m.
© 720 m.
d) 800 m.

Identify the arrows that show the correct direction of heat transfer. 66°f 112°f 98°f

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 you place a magnet under a clear dish, and sprinkle iron fillings over it, above what part of the magnet will most of the fillings gather