Why does the sound of something moving away from you seem to change to lower and lower pitch

Distinguish between a transverse wave and a longitudinal wave.

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion

Air conditioners not only cool air, but dry it as well. suppose that a room in a home measures 5.0m×9.0m×2.4m . if the outdoor temperature is 30 ∘c and the vapor pressure of water in the air is 85 % of the vapor pressure of water at this temperature, what mass of water must be removed from the air each time the volume of air in the room is cycled through the air conditioner? the vapor pressure for water at 30 ∘c is 31.8 torr.