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Straws don't really float they will sink because they will fill up with water and sink.
Puffing it up makes it less dense. Anything less dense than water can float on water, and anything more dense than water will sink.
Due to the refraction of light, a body of water (whether its a sink, pool or lake) will appear more shallow than it actually is.
I think a sink is a lever because when you push up one side the water comes out the other. I am not 100% on that though! But glad to help.
Because objects that sink have greater density, which takes up less space, which, assuming you are using the water displacement method, would take out less water.
call roto rooter the pluming specialist they fix it right
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the traps designed use was to hold a " plug " of water, to help stop sewer odors from backing up the pipes.
run cold water thru it for a minuint after you are done with it, cold water should be running while you use it also,
The pump in the dishwasher should keep the water from getting into it.
Unclog drain that both sinks drain into.
Sometimes it will back up from a dishwasher (machine)
Are you referring to the outgoing waste water backing up? You've probably got a blocked pipe running to your main sewer line. If other pipes (sink drains, toilets) aren't backing up then the blockage is between the drain pipe for the washer and wherever it ties in to the main line. You can try running a sewer snake down the waste water pipe to clear the clog. Or, the pipe could be collapsed from age/tree roots. On some older homes they don't have PVC pipe -- the lines may be old clay or paper pipes that may collapse. In that case, you'll need to dig up and replace the line.
NO
Redundant array of inexpensive disks. Its a cheap method of backing up data in a running server.
to keep hot water from backing up into the cold water piping.
Because of the water having to fill the boat up to sink it