How to calculate uncertainty when taking an average value ?
How to calculate uncertainty when taking an average value ?
I have set of data, more specifically i have measured the voltage
and i have three readings: 3.87 ;3.86; 3.85
Now the uncertainty of each is +/-0.01 V (as i have used a digital voltmeter with that uncertainty)
average voltage ~ 3.86 V
But i dont known how to get the uncertainty
do i add all three uncertainties together
or just leave it with +/- 0.01
Can Wisconsin storm spotters use amber warning lights when parked on the roadside?
Can Wisconsin storm spotters use amber warning lights when parked on the roadside?
I am a storm spotter in Eastern Wisconsin and I am wondering if its legal to use amber warning lights as a safety measure for me and other drivers when I am parked on the side of the road.
Why does a neodymium magnet vibrate when passed through a detector that looks like the things at stores?
Why does a neodymium magnet vibrate when passed through a detector that looks like the things at stores?
I have gotten a neodymium magnet from a kid in my high school and when I passed through the detector (I think it is a medal detector.) it started to vibrate in my hand. I was wondering what causes this. I think it is from magnets or whatever is in the devises that were on either side of me but I’m not sure.
what a good ammeter:?
what a good ammeter 
a. should have a very large internal resistance: (rint)
b. should have large Rint for AC , and small Rint for AC
C. should have large rint for AC , and small rint for DC
d. should have a very small internal resistance
Why does my life suck this bad?….?
Why does my life suck this bad?….?
Well long story short… 3 years after my mom left my alcoholic dad we got an apartment, my mom met a guy who WAS rich, divorced, and had lost everything because he fell into drugs. Everything was good he had a job and all then my mom got pregnant he fell into drugs again he was’nt working at all he almost beat my mom the first day of school my mom had called the cops on him. I walk to school in 100 degrees weather i have no new clothes no car i was doing so bad in school i now attend a school that helps you catch up.. hes been in jail we have no money everytime he sends a letter were waiting on him to comeback I know you guys are like wtf after he tried to hit youre mom I know But you guys dont know this guy he is an incredible man the only reason he did that was because he was on drugs Anywho.. we’ve been waiting since sep. and something always has to happen. When will the court file his case to free him were soo poor we lost cable,internet,phone im at a library btw there are guys that want to get to know me can i? no why? because i have no ride, no communication i cant even make a guy my bf because i would have no way to get to know them.. my mom bearly lives off wealfare i have a dream but cant affrod to buy what i need for it I cant get a job because i would have to drive and once again i have no car why is this life givin to me im 15 female, california, funny huh? when its cold i walk to school when its super hot i walk… my life sucks im dying to get to know a guy who ive liked but can i ? no.
What do I do about this?
What do I do about this?
My friend Jessica is really depressed lately. She keeps telling me that she needs my help with something. I tell her that she’s my best friend and I’d do anything for her. When it looks like she is going to tell me she just blows it off. I told her parents that I think Jessica wants to commit suicide but they say thats foolishness. Today I was over her house in her room. Her mom called her and I know where she keeps her diary so I tried to take a peek. I picked it up from under her pillow but a pocket knife and bloody paper towl fell out. I was so scared but I didn’t want to put it away.so I just opened to a page with the most recent date. I almost cried cuz she said how she was going to do it and how she really needed my help, bur wasn’t sure when to do it. I was at the point of crying so j just out the stuff back right before she was coming. She asked if I would leave. I couldn’t believe she was cutting herself ( that explained the long sleeves) but she wanted to commit suicide. I keep trying to tell her parents but again they said it was stupid.. The next day I tried to show them her diary but the pages were all gone. I was so sad but Jessica needs my help. What do I do if her parents won’t believe me??!!
Can someone help me with this crazy life?
Can someone help me with this crazy life?
Where to start…I am 20 years old. I graduate college on May 2nd of this year. I really can not figure out if there is something wrong with me or someone else. Lets back it up a little. When I was 16, i unfortunately went out partying and got a DUI. Six days after my 18th birthday, I married my high school sweetheart, who I went through hell for, for nearly 4-5 years of a relationship with very over protective parents; i’m talking trips back and forth to california from florida to see her because she moved, so long distance. I kept the flare alive and moved her out a couple days after she turned 18. Like I said we got married. Months after I find out im going to be a father. My wife gives birth to a beautiful baby boy. We were very happy but we still lived with my parents and with the economy it was very hard to find a job. Months went by and I started to notice thinks were different in our relationship. My wife started to get me suspicious of her so one day i followed her. I found out she was cheating on me with another man, the worst part of it all is it was my best friend since childhood. I could not believe it, i was crushed for months. I finally got the divorce papers drawn up and I ended up getting custody of my son. ( Keep in mind i’m out of work at the time and a full time student) I still try to keep on moving. About a year goes by and i’m out with a couple friends drinking and my friend ends up driving my car because i was over the limit. Our plan was to park the car at a nearby park and leave it tell the morning and go to a buddy’s house and soberr up. We sit at the park for about 20 min and talk with the car off. When we were about to leave i notice my car was parked slanted so i got out because my friend was using the restroom to re-position my car. Soon as I started the car a cop hit hid lights out of no where and gets me for a DUI again. I’m 20 at this time. This is going on right now, I have court in june. I get out of jailAndd by this time i am more than depressed. I really have nothing but my son to look forward to. I can’t drive. I’m still in school. i cant look for a job ever. I live wit my mom who is an alcoholic and never wants to help me with my child. i’m so stuck i feel like there is no reason to try or go to school because of these stupid DUIs and even if I do graduate n have a degree who will hire me. I’m really just a mess. Is there any hope, Is there agency’s that can get me out of this house n help. I get called a piece of s*** everyday of life and i do not know what to do. I admit i had a drinking problem, andthat’ss what caused my negligence to drink the first time and most likely the 2nd. I’m really just a nice guy who wants to raise his son, im just so trapped with no options that i want to be dead, the only thing that keeps me alive is my son, and i just want the best for him; my dad abandoned me when i was a kid, and my sons mother did the same, i just want some kind of hope. Thanks for listening
What is the significance of flowers in ‘The Handmaid’s Tale’?
What is the significance of flowers in \’The Handmaid\’s Tale\’?
In ‘The Handmaid’s Tale’, flowers are used throughout the novel as a symbol, as well as Serena’s garden. But I am unsure what they represent. Here is a quote all about flowers? Any idea about the significance of the garden and flowers?
Well. Then we had irises, rising beautiful and cool on their stalks, like blown glass, like pastel water momentarily frozen in a splash, light blue, light mauve, and the darker ones, velvet and purple, black cat’s-ears in the sun, indigo shadow, and the bleeding hearts, so female in shape it was a surprise they’d not long since been rooted out. There is something subversive about this garden of Serena’s, a sense of buried things bursting upwards, wordlessly, into the light, as if to point, to say: Whatever is silenced will clamour to be heard, though silently. A Tennyson garden, heavy with scent, languid; the return of the word swoon. Light pours down upon it from the sun, true, but also heat rises, from the flowers themselves, you can feel it: like holding your hand an inch above an arm, a shoulder. It breathes, in the warmth, breathing itself in. To walk through it in these days, of peonies, of pinks and carnations, makes my head swim.
Thanks! 
brake light warning on dash for 1999 Audi A4 1.8t?
brake light warning on dash for 1999 Audi A4 1.8t?
the brake light warning light has come on, and my left hand brake light is not working although my right hand side one is.
does anyone know how to change the bulb in a car like this?
cheers
digital scales, what is the 1/2 (literally pictured like this) to a decimal …?
digital scales, what is the 1/2 (literally pictured like this) to a decimal …?
When a digital scale reads e.g
6 stone 2 1/2
What is the half pound? i mean is it 6 stone 2.5 ?? I want to be able to type this into say google and have it convert into kg or lbs but it does not recognise the 1/2, and so i need it in decimals. Im guessing it means ounces??
thanx