Depends on your size and your tolerance to alcohol. It may make you a tad slower.
At least half 5th of alcohol a day
If you have any intention of driving after drinking, do not drive. Any alcohol in your system can mess with your reaction times. A half of a second is all it takes to cause an accident.
The time it takes to pass a breath test after drinking a half pint of alcohol depends on various factors such as your metabolism, weight, and alcohol tolerance. On average, it could take around 1-2 hours to pass a breath test after consuming this amount of alcohol. It's always safest to wait until you are sober before driving or operating machinery.
A breathalyser detects the presence of alcohol in the blood. Alcohol gets into the blood when you drink it. The body processes alcohol at a fixed rate (1 unit, that is 10 ml of pure alcohol, an hour). Therefore if you have consumed 6 units, the breathalyser would still detect the presence of alcohol after 5 hours. If you had just consumed 4 units the breathalyser would not detect alcohol after 5 hours.
Perhaps for a very small child -- say, a two or three year old.
That will depend on a number of factors. Beer varies considerably by alcohol content. A half pint of an IPA could be the same alcohol content as a full pint of a lager. The weight of an individual and the speed they drink it will also factor into the BAC.
My father is a state police man he said it would show up.The ETG test is extremely sensitive, and can detect alcohol from mouthwash. The amount in half a beer would show up for a couple of days at least.
Try and remove the glass immediately in a "good faith effort"
No, on two reasons. 1.) Your body metabolises 1 unit of alcohol an hour. 1 unit is equivalent to one measure of spirits or half a pint of beer. By the time 24 hours hours has passed, most of the alcohol will have already been metabolised in your body, unless you drank more than 24 units. 2.) Drinking water does not affect the rate of alcohol breakdown at all. The only thing it will serve to do is to reduce the risk of dehydration if water is consumed as you drink alcohol.
its on top of the column about half way down
One half of the proof is the percentage. 100 proof alcohol is 50% or half alcohol.