Friday in physics was a relief to all of us, even Coats-Haan. Why? Coats-Haan is officially drug free! When we saw her last, it had been a full 24 hours since she'd taken dayquil and nyquil. Did she make it through the weekend? I wonder...I sure hope!
First, we checked homework, but didn't turn anything in. The homework we went over was page 1001 (Goodness! No wonder those physics books are so darn heavy!), numbers 17-19, 21, 29-35, 40-42. Then, we got to watch an exciting video on Chernobyl, which was filmed 10 years after the nuclear explosion that took place there. Before and during the movie, we filled out a true and false worksheet, page 223 in the lab manual.
Coats-Haan also informed us that we will be having a quiz on Monday over the information we have learned about in the past few days, including notes, the example sheet, and homework assignments.
Now, to answer the question of the day. There were several key mistakes at Chernobyl. The biggest mistake I see is that when they were running tests, they shut off all emergency back ups so that nothing would interfere with their testing. Even when the reactor was unstable, they continued to test. Also, the design of the reactor itself was not as well designed as others. What also really bothers me is that there was a huge time delay in informing the nearby cities and towns that the reactor exploded and was releasing dangerous radiation into the atmosphere. Those people should have at least been given a heads up to get out of there as soon as possible.
I hope you all had a happy Star Wars day! May the fourth be with you!
Sunday, May 6, 2012
Friday, May 4, 2012
Thursday, May 3, 2012
05/03 Tuazon
Turned in: Nuclear Fission and Fusion Guiding Reading; Nuclear Fission and Fusion balancing worksheet
Activities: Nuclear Math Notes
Homework: P. 1001, #17-19, 29, 29-35, 40-42
Dear Coats-Haan,
I hope you can read this blog today. That NyQuil and DayQuil really takes its toll. Just in case you were in too much of a stupor to recall anything, I'll give you a recap of what happened today.
You may recall having arrived to school in pajama pants and a Georgia Tech shirt (sort of dressed like Kreider when he forgot to change his clothes yesterday morning). You may also recall saying that Emily was trying to negate her tall marks and telling Kelly to cover Emily mouth before she could do so. You may recall all the seniors leaving us (the cool kids) for a class assembly about graduation.
If you can't recall any of that, you may want to lay off the drugs for a while, ma'am.
Anyway, soon after the seniors abandoned us, you suffered through the slow computer-loading to open up the Nuclear Math Power Point, which has much fewer slides than yesterday's on Nuclear Fusion and Fission. You taught us how to find the number of alpha and beta decays in transmutations, as well as how to find the number of parent nuclei after a certain time. To do the latter, you said to use N=N0e^-λt, where N = number of radioactive nuclei at time t, N0 = original amount, t = time, e = 2.7, and λ = decay constant (measure of isotope stability).
Of course, while you were trying to show us this equation, you were struggling to erase things on the Smart Board (in your words, "It's not the drugs! It's the computer!"). However, despite the delay in my note-taking, I still understand that activity, written as "a" and represents the rate of decay, is equal to ΔN/Δt, or Nλ and can be measured in Becquerels (Bq), which is 1 decay/s, and Curies (Ci), which is 3.7x10^10 decays/s.
In between telling us that ln2=λT(subscript 1/2) (T(subscript 1/2) represents half life), your hatred for a certain brown-haired substitute who stole you keys brewed, and vehemently you ordered Amy to seek her out and retrieve your keys. Your NyQuil called her a bad name.
Love,
Jasmine
Question of the day: How is half life related to the decay constant? Do more radioactive elements have bigger or smaller decay constants?
Answer: Half life is ln2/λ, λ being the decay constant. However, I am not sure about the second part of the QotD. Please have the DayQuil explain to me of the correct answer.
Activities: Nuclear Math Notes
Homework: P. 1001, #17-19, 29, 29-35, 40-42
Dear Coats-Haan,
I hope you can read this blog today. That NyQuil and DayQuil really takes its toll. Just in case you were in too much of a stupor to recall anything, I'll give you a recap of what happened today.
You may recall having arrived to school in pajama pants and a Georgia Tech shirt (sort of dressed like Kreider when he forgot to change his clothes yesterday morning). You may also recall saying that Emily was trying to negate her tall marks and telling Kelly to cover Emily mouth before she could do so. You may recall all the seniors leaving us (the cool kids) for a class assembly about graduation.
If you can't recall any of that, you may want to lay off the drugs for a while, ma'am.
Anyway, soon after the seniors abandoned us, you suffered through the slow computer-loading to open up the Nuclear Math Power Point, which has much fewer slides than yesterday's on Nuclear Fusion and Fission. You taught us how to find the number of alpha and beta decays in transmutations, as well as how to find the number of parent nuclei after a certain time. To do the latter, you said to use N=N0e^-λt, where N = number of radioactive nuclei at time t, N0 = original amount, t = time, e = 2.7, and λ = decay constant (measure of isotope stability).
Of course, while you were trying to show us this equation, you were struggling to erase things on the Smart Board (in your words, "It's not the drugs! It's the computer!"). However, despite the delay in my note-taking, I still understand that activity, written as "a" and represents the rate of decay, is equal to ΔN/Δt, or Nλ and can be measured in Becquerels (Bq), which is 1 decay/s, and Curies (Ci), which is 3.7x10^10 decays/s.
In between telling us that ln2=λT(subscript 1/2) (T(subscript 1/2) represents half life), your hatred for a certain brown-haired substitute who stole you keys brewed, and vehemently you ordered Amy to seek her out and retrieve your keys. Your NyQuil called her a bad name.
Love,
Jasmine
Question of the day: How is half life related to the decay constant? Do more radioactive elements have bigger or smaller decay constants?
Answer: Half life is ln2/λ, λ being the decay constant. However, I am not sure about the second part of the QotD. Please have the DayQuil explain to me of the correct answer.
5/3 qod
How is half life related to the decay constant? Do more radioactive elements have bigger or smaller decay constants?
--ch
--ch
Wednesday, May 2, 2012
Tuesday, May 1, 2012
4/30 Shah
Turned In
We turned in the questions from the atomic nucleus reading.
We turned in the questions from the atomic nucleus reading.
Assignments
We worked on pages 217-220 in our lab manual (which is homework if not completed). We also have a worksheet on carbon dating to finish for homework.
We worked on pages 217-220 in our lab manual (which is homework if not completed). We also have a worksheet on carbon dating to finish for homework.
Class Activities
Well the class started off with tornado drill. As we waited inside the AP room, Coats-Haan told us about the negative side effects of tanning. After that we went over the Cloud Chamber pre-lab questions. We set up the cloud chambers and then Coats-Haan showed us presentation on radiation and its side effects. After that we observed our cloud chamber and saw the particles flying around in the chamber. It was pretty neat. Then we watched a Sense of Scale web stimulation. After that we started the worksheets in our lab manual which are homework if not completed.
Well the class started off with tornado drill. As we waited inside the AP room, Coats-Haan told us about the negative side effects of tanning. After that we went over the Cloud Chamber pre-lab questions. We set up the cloud chambers and then Coats-Haan showed us presentation on radiation and its side effects. After that we observed our cloud chamber and saw the particles flying around in the chamber. It was pretty neat. Then we watched a Sense of Scale web stimulation. After that we started the worksheets in our lab manual which are homework if not completed.
QODI think carbon dating does not give an exact date, but a range of years over which the object may have formed.
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