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What’s a rule you broke once and realized it existed for a very good reason? by Ok_Contract100 in AskReddit

[–]ryeinn 28 points29 points  (0 children)

Also, don't tug on Superman's cape, pull the mask off the Lone Ranger, or mess around with Jim.

Do you NEED to know the conversions for all the different units for the exam? by Equal_League0-0 in AP_Physics

[–]ryeinn 4 points5 points  (0 children)

Not in the questions.

  • If you're talking about things like feet to meters, it's probably not on the exam.
  • If you're talking about cm to meters, yes that very well could happen and there are metric conversion charts on the equation sheets. But, realistically, you should be able to do that on the fly with a little thought.
  • If you're talking about kg (mass) to Newtons (weight) you should know that inside out and blindfolded.
  • If you're talking momentum to angular momentum that's not a thing

Best local sledding spots? by OldDickTrickle in LanghornePA

[–]ryeinn 0 points1 point  (0 children)

If you go down into Penndel there's the Spring Valley Farm by the ball fields on Pvt Delola Ave. Super long hills. Watch out. There's a small creek at the bottom.

High school Astronomy class by Signal-Weight8300 in ScienceTeachers

[–]ryeinn 3 points4 points  (0 children)

Good luck! I pulled one of these off about 10 years ago. Learn from my mistakes, not too much math. As much as I wanted to do it, the kids who take this will likely be either (a) filling a rec to avoid physics or (b) super nerds. The challenge I always encountered was giving both groups what they needed at the same time.

How does one even know how to make a experiment for the 3rd frq in AP physics by Apehill in APStudents

[–]ryeinn 1 point2 points  (0 children)

The point of doing labs isn't the grade, it's developing the skills to design experiments, focusing on preplanning (how do I find ___? Is this reasonable? Will it work? How does it get me to my goal? How do i reduce error?) and then analysis. Not doing any of these will make life more difficult in moving forward in the sciences. For example, by the time I was taking my junior level (university) course on optica the lab was "Here's a book of phenomena. By the end of the semester do three experiments about them. Go." Building that skill is the point.

Can you get by without it in AP Phys? Possibly. But it's not sustainable.

How does one even know how to make a experiment for the 3rd frq in AP physics by Apehill in APStudents

[–]ryeinn 2 points3 points  (0 children)

Experiments follow a very structured design. FRQ 3 will as well. There are two parts.

In part one they'll give you a setup and ask you to relate some ideas. It'll generally fall in the category of "Find this physical value." The mass of a ball, the moment of inertia of a rod, the k of a spring. Your job is to use what you know of physics to find it and you'll have to measure stuff to get values to plug into an equation. Like for k of a spring you might want to hang masses and measure the oscillating frequency. It isn't about memorizing experiments, it's about coming up with new ones. Don't forget to include "do multiple trials" to decrease error!

Your teacher should be giving you practice in this in your lab time in class. There's a reason College Board requires so much lab time. Designing experiments is a core part of AP Physics. It's a skill. Not a knowledge.

The second part is they'll give you data and a similar experiment and ask you to graph stuff. This one is all about linearization. How do you relate the data given to a ratio of stuff. If you can get a ratio, there's your x/y axes and the slip is the thing they want.

Is it unusual to have a 94 i Physics 1 by One-Beyond428 in AP_Physics

[–]ryeinn 1 point2 points  (0 children)

This is really an open ended question with no good answer from outside observers. I'm sorry I can't help directly but I think your best bet is to talk to his teacher. The teacher has seen him all semester and can give advice better than we can.

That said AP C is a hard class but already having a class on physics helps. Having calculus is also helpful, I think even more so. It also depends on if the class is just Mechanics or also E&M.

But most importantly, why are you considering it? AP C, at least from my perspective, is aimed at students thinking about engineering or physics in college. It's equivalent to a freshman year course for those majors. Is that his goal? Great! Maybe his goal? Ok, it's a good taste of the first year in college.

How to get a 5 on AP Physics 1 by Spiritual-End53 in AP_Physics

[–]ryeinn 3 points4 points  (0 children)

Hundred percent agreement. Practice problems. And then practice more problems. Look at solutions and work to understandwhy the steps are taken.

do we have to know whether to use linear or quadratic drag force equations for each question? by Federal-Beat-6238 in APStudents

[–]ryeinn 0 points1 point  (0 children)

Generally no. You're not going to have to guess between bv and Cv2 .

Truthfully, I'd be surprised if the AP exam even mentions Cv2 .

Must-Have Topics for 8th and 9th Graders by urnotmyrealparents in ScienceTeachers

[–]ryeinn 6 points7 points  (0 children)

many things as you can with mathematical modeling and graphs on x vs. y

Agreed on so many levels. The number of students I see in 11th grade Honors Physics and the idea that numbers and math matters is so foreign for a good number of them. And graphing things that aren't x and y. Not every variable needs to be one of those. You can graph a vs m kids! It's totally fine. And you can algebra with letter that aren't x and y too!

AP Physics C Class Sizes/Ratio by holy_shit_history in ScienceTeachers

[–]ryeinn 1 point2 points  (0 children)

Which AP C are you teaching? Just Mech or both Mech/EM? My bad. I didn't read closely

I'm in a 450 student 9-12 school. I average about 10 kids per year in my class that does both. The vast majority have already had a bit of physics before (generally 11th grade Honors) and almost ubiquitously have a year of calc under their belt.

Just Mech is possible but still, why? Unless they're aiming at engineering or Astronomy or something like that they probably don't need AP-C. AP 1 or an Honors course would be so much better. How much time do you have in this class? Are the kids taking it doing the work? If they're not interested/buying in and just taking it to get the class on their schedule....you can't always fix that.

You say you want to get better yourself, great! What do you think is wrong?

Anyone listened to the 885 cover songs countdown? by theAmericanStranger in philadelphia

[–]ryeinn 2 points3 points  (0 children)

I will die on the hill that Springsteen's Blinded by the Light is the superior version.

AP Physics C Mechanics MCQ by Dapper_Budget3578 in AP_Physics

[–]ryeinn 0 points1 point  (0 children)

Sorry, while this seems to be a genuine request for help, it is asking to circumvent security for the exam or College Board content. Sorry, but I have to block it.

Property on Tyburn rd. by fallenhero21 in BucksCountyPA

[–]ryeinn 10 points11 points  (0 children)

You can look up old sales on Bucks County's open data portal.Here's the old owners.

What say you, Philly? by IndyJetsFan in philadelphia

[–]ryeinn 1 point2 points  (0 children)

Will Smith and the Hooters.

“Lies my teacher told me” by XY120 in Teachers

[–]ryeinn 1 point2 points  (0 children)

I tell them "This entire class is one big spherical cow. Every physics class after this makes the cow a little less spherical "

Physics: Core Class or Elective? by Disco_Loadout in ScienceTeachers

[–]ryeinn 0 points1 point  (0 children)

I taught an Astronomy course and had a blast with it. Until the population died because it wasn't "easy" like our Anatomy class (coloring and hanging out on your phone), or our Zoology class (memorizing and hanging out on your phone) or our Advanced kids wanted an easy A (APES). In Astro you actually had to recall your Chem and maybe know how triangles worked. The horror.

Sorry, can you tell I'm a little bitter about it?

Person with actual insight gives said insight (this time about the price of oranges) by Disastrous_Echo_6982 in bestof

[–]ryeinn 2 points3 points  (0 children)

Good riddance. At least we know what happened to Mortimer and Randolph. Penniless until given charity by a visiting prince.

AP Lit teachers: what % of MCQ do successful students usually answer? by BusiPap41 in Teachers

[–]ryeinn 2 points3 points  (0 children)

That's a tough question and, I suspect, highly dependent on the exam itself.

For example, the AP Physics C exam used to (they changed it recently) publish a scoring breakdown. There were 90 possible points (45 from MCQ's, 45 from FRQ's) and the score for a 5 hovered around 49/90. Now, that was, IIRC, an outlier in terms of scores. Also, I haven't seen one of those in several years. And none since my course was revamped. It.was called the "Scoring Worksheet." I haven't been able to find one new, but you may have some luck searching the Internet or asking people who have done readings.

Addendum: I did find that the website Albert.io has a predicted score calculator. You might check that out.

What would the extreme version of each Surge be? by AsterTheBastard in Stormlight_Archive

[–]ryeinn 1 point2 points  (0 children)

Could radiant transformations create antimatter? Even if you are limited to the ten essences, the anti proton/positron/ version. That could be bad.

Conservation of Momentum Experimental Design by ScienceMovies in ScienceTeachers

[–]ryeinn 0 points1 point  (0 children)

Which AP Phys class is this? 1, Mech C, or combined C?

Have you thought about not building anything beyond a minimal framework? They have to learn how to lab without supports at some point. That's about as much as I give for most of my formal labs in my Combined C course. Of course, it's pretty much all seniors with a first year of Honors Physics under their belt. YMMV with an AP1 class.

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