Technical Problem Solving C

[Seracon]

I recently encountered a question with a diagram set up like a square, with Q- or Q+ in the corners. I can't remember what it was called, but it had something to do with charges. Does anyone know what this is called, and how one goes about doing those problems? (I tried doing a Google search, but it is challenging to do when you don't know what it is called.)

I'm not too sure, but it sounds like a electricity/magnetism problem to me. I have no idea how to do them, though, and hope that it's not on the Nationals test...

[Skink]

Something related to point charges? Like this:

[butter side up]

Yeah, almost exacly like that. But if it doesn't meet this year's rules, it is unlikely to show up at the higher level tests. I was just really confused. In that case, it isn't critical, but a simple explanation of what any of that meant would be appreciated.

[Phenylethylamine]

Yeah, almost exacly like that. But if it doesn't meet this year's rules, it is unlikely to show up at the higher level tests. I was just really confused. In that case, it isn't critical, but a simple explanation of what any of that meant would be appreciated.

Yeah, it doesn't belong on TPS, but basically: Q represents some quantity of charge. The question would presumably be what the force (or something) at point P would be, in terms of Q.

There really shouldn't be any entirely pencil-and-paper based questions on this event.

[Seracon]

Hey guys, how would you approach/solve a problem like this?

Here is a water bottle, never opened before. Go ahead; squeeze some of it out into this cylinder. We provided two thermometers for you. Find how much air entered the bottle
(From Test Exchange, Question #6)

Thanks!

[quizbowl]

Hey guys, how would you approach/solve a problem like this?

Here is a water bottle, never opened before. Go ahead; squeeze some of it out into this cylinder. We provided two thermometers for you. Find how much air entered the bottle
(From Test Exchange, Question #6)

Thanks!

Ooh haha, I wrote this!

Basically you'd use Charles' Law (V1 * T2 = V2 * T1) and, using the thermometer to find the temperature of both the room and the water, you can figure out the rest.

[anepictimelord]

At my regionals the event was very similar to experimental design, we had to know proper lab procedures. If you can I would advise buying a ti-inspire calculator and a couple probes to get into practice

[Phenylethylamine]

At my regionals the event was very similar to experimental design, we had to know proper lab procedures. If you can I would advise buying a ti-inspire calculator and a couple probes to get into practice

At most competitions where I've seen them have probes, they've given a quick rundown of how to use them and have had pretty specific written instructions present as well – so while it's still good to be familiar with the probes in advance, it's not a disaster if you can't.

[durza0wnsyou]

Hey my team is having difficulty figuring out how to prepare for this test, we've already taken the one posted practice test. How are other people preparing and is there any other practice tests that our team could have a look at? Thanks!

[Phenylethylamine]

Hey my team is having difficulty figuring out how to prepare for this test, we've already taken the one posted practice test. How are other people preparing and is there any other practice tests that our team could have a look at? Thanks!

You can purchase the National test packet from previous years from soinc.org; the National TPS tests tend to be quite good (albeit full of hilarious typos). Looking at tests is really the best way to practice – ideally, just taking a whole bunch of lab questions and saying how you'd do each one.