Assume the coe?cient of linear expansion for copper is 1.7 X 10E ?5 ( ? C) ?1 . answer in units of m
Change in length coefficient of expansion * original length * temperature change Just plug in the numbers.
I have three kids, ages 15,10,6. The kids have all been told to get out of the house if there is a fire, and we have a meeting point the tree across the street. I disconnected one fire alarm that went off every time I cooked, but all the others (one in each room) are still connected so I feel they will be enough to warn us of a fire. My alarms are hard wired, so when the battery needs to be changed it beeps every so often (usually at 4am) so that you have to change it. They say change your clocks change your batteries, I guess if you are not wired that is the best thing to do.
well i;m seventeen and yes, my family did do all of those things when i was younger at least. we made a safe meeting spot [the mailbox of our neighbor], and changed our smoke detector batteries when needed, because if you didn't it would beep like once every five minutes, which was quite annoying but proved to be a great reminder. i think that taking all of these habits are very important factors in keeping your family safe, since my dad was a volunteer fire fighter and i've heard many horrifying stories from him and the fellow fire fighters in his station.
We have a plan but (for shame) have never practiced it. I live in a small apartment on the third floor, we have 3 exits but none of them are on the ground level (2 balconies and 1 door leading to a staircase outside). The plan is grab the first cat you see (we keep a bag of treats by the door to shake in case we need it) and head to the exits. Obvious choice is the one leading to a stair case, but if we can't use it, either balcony will do until the fire dept shows up to rescue us from it (in a dire emergency we could jump off one and land on grass, the other is asphelt). Alert the neighbors as soon as we get out so they can save their kids. We meet across the street. The smoke detector is hooked up to the electricity so we don't have to check batteries. I was worried about that detector because if the electricity is out because of the fire, it won't go off.but the Fire Chief was here one day doing a random check and he assured me it'd go off before the electricity died. I have a battery operated detector just in case, and 2 fire extinguishers in my kitchen.
