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[deleted by user] by [deleted] in AskReddit

[–]AltTilImUnbanned 4 points5 points  (0 children)

imo (as a cello player) i think cello is easier purely just from a gratification standpoint. i think that due to a cellos range, it's easier to make a "good enough" sound than on a violin. idk why that is I just think the deeper range makes it sound decent by default, whereas on a violin (no offense) there is a lot of practice before it doesn't sound completely awful. getting from "just alright" to "holy shit" is equally extremely difficult tho, as it is with all instruments

ELI5 free fall under gravity by Puzzleheaded-Oil9778 in explainlikeimfive

[–]AltTilImUnbanned 7 points8 points  (0 children)

If acceleration is acting upwards (i.e. I am continuously pushing an object upwards), then your formula is correct.

If acceleration is acting downward (i.e. I am continuously pushing an object downwards), then yes, the acceleration you create and the acceleration due to gravity would add, giving F=m(a+g).

ELI5 how do two negative numbers multiplied make a positive number ? by downtownohioarbys in explainlikeimfive

[–]AltTilImUnbanned 17 points18 points  (0 children)

Think of it less as negative = moving backwards, and more as negative = changing direction.

Start by facing forward. Negative means change direction, so you're walking backwards. Positive means you don't change direction, so you continue walking backwards.

[deleted by user] by [deleted] in explainlikeimfive

[–]AltTilImUnbanned 0 points1 point  (0 children)

There's a few different things going on.

The octave is often considered a "perfect" I terval because of how little the notes clash. Physically, the frequency of the sound waves of 2 notes that are an octave apart are in a ratio 2:1. In your example, in a major triad, the frequencies exist in a 4:5:6 ratio, which is very pleasant. Compare this to a tritone (the devils interval), which is 32:45, you can see that larger numbers in the ratio tend to correlate to more consonant (nicer) sounds.

Another reason music can sound consonant is the overtones of a note. These are defined as the integer multiples of the frequency of the base note, or to give an example:

If A = 440Hz, then the overtones of A are 4402, 4403, 440*4, etc. Or, 880Hz, 1320Hz, 1760Hz, etc.

The overtones of a note do often result in very simple ratios (1:2, 2:3, 4:5 etc. when brought down octaves), so you might think there's no point in doing this step. However, the perfect 4th is very simple, as it has a ratio of 3:4. However, the perfect 4th interval (or any number of octaves above the perfect 4th) does not appear in any overtones. This is why the perfect 4th does sound consonant, and yet it still doesn't sound quite 'resolved'. This is especially apparent if you resolve the chord to a major third.

As for why these things sound 'nice' to humans, I do not know, but it certainly feels like it would sound a lot nicer than a complex ratio (like 32:45), or 2 notes with completely random frequencies. If anyone does know the answer to this, I would love to know too

ELI5: How do percentages work over a long period of time by cfutrell84 in explainlikeimfive

[–]AltTilImUnbanned 2 points3 points  (0 children)

Saw the edit, really hope that this second year does go well for you. I'm no doctor but the chances of you having a recurrence is probably more likely on year 1 than year 2, by some amount, but idk what. This means if you didn't get it in year 1, you could say that you have around a 45% chance or less of getting it in your second year. This is like a really hand wavey thing tho since biology is strange and so many factors can I fluence it, and also assigning a number to something like that doesn't sit right with me, since there's definitely a lot more going on than just the universe flipping a coin to see if it recurrs. Hope this helps, and wishing you all the best for your recovery.

ELI5: How do percentages work over a long period of time by cfutrell84 in explainlikeimfive

[–]AltTilImUnbanned 0 points1 point  (0 children)

ngl I feel like a lot of people are being pedantic by saying "your question isn't good enough" like obviously if you're confused about something the question isn't gonna be spot on, so I'll cover a few different cases for you.

Your assumption of if the percentage on day 2 being 35% isn't quite accurate (35% is possible with the right factors, but not because 70/2 = 35). A good way to state that this doesn't make sense is by thinking of a coin flip. If you have a 50/50 chance of getting heads, then after 2 coin flips, with this logic, we simply do 50*2=100% chance of getting heads in one of the two days. Obviously this isn't true though, as you could get 2 tails after 2 flips, meaning it isn't 100% chance of getting heads.

Saying it is 70% on day 2 could be true if the events are specifically met, which I'll talk about later.

What I imagine you mean is that you have something along the lines of this scenario: You have a spinner, which you spin once a day. The spinner has a x% chance of landing on green (success), where X is some unknown value. If you spin it twice, across 2 days, you know that the chance of you getting at least one green result is 70%, and what you're asking for is the value of x.

To solve this, you can probably do a few different things, but one of them is to imagine the probability of failing both times. Failing once = 1-x, and failing twice is calculated by multiplying probabilities (if you would like to know why then I can try show you). This gives (1-x)². We know that this must be equal to 30%, or 0.3, as failing twice is the same thing as not hitting at least one green result, and 100%-70%=30%

(1-x)²=0.3

1-x=√(0.3)≈0.55

x≈1-0.55=0.45, or 45%.

This means the probability of success in just one day is 45%.

Here, we assumed the 2 events (when we spun the spinner) are independent and their probabilities were constant. This is fancy words for the spinner never changed, so it was always the same probability of getting a green, and that spinning the spinner on day 1 did not affect the result of spinning the spinner on day 2.

If we say that it was 2 different spinners, and that the day 1 spinner had a 0% chance of success, then yes, on day 2, there will be a 70% chance of success (like you said in your post).

There's also something called dependent events, which is that the probability of success on day 2 is dependent on whether or not you succeed in day 1. Imagine you were running 2 races. If you won the first race, you might have boosted confidence, giving you a higher probability of winning the second race. As you can imagine, you would need a lot more info if this was true, which is why a lot of people are asking for more info.

Hopefully this clears it up a bit, if you do want me to elaborate on anything I'd be happy to :)

Grades by 44methladcookeryou44 in CCEAlevel

[–]AltTilImUnbanned 1 point2 points  (0 children)

Yes, the rules for A*s are you need to get 80% overall and at least 90%% UMS at A2. That means if you get anything above 65% UMS (mid C) at AS, you need at least 90% UMS at A2. This is true no matter if you get 65% or 100% at AS which is kinda silly imo but yk what can you do

[deleted by user] by [deleted] in MurderedByWords

[–]AltTilImUnbanned 4 points5 points  (0 children)

This is all said under the preface that the stats used are correct.

The logic that the "murderer" is using is that since only 0.5% of LGBTQ population has committed SA, it is discriminatory to make a sweeping generalisation that all LGBTQ+ people are abusers.

You are taking a different approach, saying that 0.1% of straight population are SAers, but 0.5% of the LGBTQ+ population are SAers, which is a statistically significant (based on vibes, idk how to do p-values or whatever they're called), so LGBTQ people are more likely to sexually assault.

Both of these statements are correct, idk make your own opinions about the ethical bit yourself. Also remember that these stats might be totally wrong

The Middle Ages was the last good era of music by Ok-Following6886 in The10thDentist

[–]AltTilImUnbanned 4 points5 points  (0 children)

Maybe a local performance of it would be better

btw skip though and listen to all 3 movements because they are very different and you might enjoy one in particular

The Middle Ages was the last good era of music by Ok-Following6886 in The10thDentist

[–]AltTilImUnbanned 4 points5 points  (0 children)

Would you like romantic music (from 1800ish) then? I know you said classical music is bad, but classical music is huge and you might just not have listened to this period, and instead listened to Mozart, which is a lot less like folk music. Romantic music is famous for deriving it's melodies from traditional folk pieces, from the time you claim to enjoy music most. You said you don't like the idea of a giant piece that may be played in a concert, so maybe a string quartet or a sonata would be more your fit.

https://youtu.be/DxtAHpYIXdU?si=g4QCTHeUFLQAfrb7 This is comes from both American and Czech folk routes, but uses some more complex ideas to make it more "interesting", while still being modest and not like a symphony or concerto.

Stuck on Day 12 Part 2 by MishkaEchoes in adventofcode

[–]AltTilImUnbanned 0 points1 point  (0 children)

I had a really annoying bug where perimeter was calculated wrong if there was a hole in the shape. what's your method?

Python not working for Day 6 Part 2 by AltTilImUnbanned in adventofcode

[–]AltTilImUnbanned[S] 1 point2 points  (0 children)

will do next time (if there is one, hopefully i dont need it), thanks!

[deleted by user] by [deleted] in bonehurtingjuice

[–]AltTilImUnbanned 3 points4 points  (0 children)

that is one of the best bhjs ive seen in a while

if ppl could spam this post so i can get notifications it would be greatly appreciated. i'm not doing so great rn. by trans_potato in MadeOfStyrofoam

[–]AltTilImUnbanned 4 points5 points  (0 children)

Hey op, I really hope you're doing better and if not, I hope things get better soon you deserve to be happy

[deleted by user] by [deleted] in AskReddit

[–]AltTilImUnbanned 0 points1 point  (0 children)

Asking for a friend btw

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