A fire hose delivers 300 liters of water per minute. Express this in cubic meters per second.?
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They won't shut themselves off. It has to be manually done unless you feel like waiting for the batteries to run out. Are you talking about your own personal alarms or are you in an apartment building or office? You might need to let someone know that they need to be turned off. If you are actually talking about smoke alarms they will go off as soon as the smoke clears out.
