Return walls are typically used at the ends of the structural walls to provide a finished appearance.
Cold air return vents are the ones on the wall
The number of return swings that will strike the wall will depend on the length of the pendulum and the distance from the release point to the wall. For a typical pendulum, the first return swing may strike the wall if the initial release is very close. Subsequent return swings may or may not strike the wall, depending on the pendulum's length and the wall's distance.
bridges, roads, highways, the great wall of china
The great wall is located in China.
the cell wall is located on the outer edge of the cell
There are som bridges. Jump on them and you will see the top of the wall. Enjoy , fellow Poptropicans!! :)
On the inside of the wall.
A return vent is usually a large grate on a wall or ceiling that allows air to flow back into the heating or cooling system. It is typically located in a central area of a home, such as a hallway or living room, to efficiently circulate air throughout the house.
A parapet is a low fortified wall. On most bridges this would refer to it's sides.
The filter is most likely in the area of the return box. This box is usually located beneath the system. If you have a gas furnace the filter may be behind the bottom door. It is possible that you have a return filter grill which would be on the wall or in the ceiling. You must figure out how the system is getting its return air and that is the most likely place to look for the filter.
The number of return swings that will strike the wall depends on the length of the pendulum and the distance it was released from the wall. If the length is shorter and the release angle is more acute, the pendulum may strike the wall on the first return swing. If the length is longer or the release angle is less acute, it may take multiple swings for the pendulum to reach the wall.
China