Chapter 207: Let’s Do Some Homework (3)
As Ari continued talking without sound, a banner flashed across the screen, asking Rachel to donate to keep his stream going, warning that it would end in 8 minutes if not enough donations were made.
Thinking that there was enough time, she watched the screen carefully until she saw Ari turn back with a cheeky smile while making scissors with his uninjured hand.
"Ah, the team said I need to watch what I’m saying, so please pretend you didn’t hear that. Oh, apparently I’m not supposed to say that either? Cut cut."
Still curious, Rachel quickly typed a clarification question along with others in the chat, asking for more details about what happened to his arm, but Ari did not seem to see it; instead, he read out another question.
[SufferingHighSchoolStudent is asking if I can help them solve their homework problem? Maybe? I used to be a tutor at my school, you know? Oh, a physics problem. Let’s do it. It’s a problem to derive how fast and far sound travels through the air at a certain temperature and humidity. You don’t understand it? Hmmmm. Okay, imagine you’re at a festival in Chicago, trying to reach the main stage just as your favorite singer (which is me, obviously)" Ari stopped to wink before continuing, "You want to get to the main stage before the first note is sung and need to know how fast to move to arrive so your eyes see this amazing singer before you hear the first note, so using fluid mechanics, law of thermodynamics, calculate soundwave compression and decompression......"
As he was explaining the problem, Rachel watched as Ari quickly sketched out a stick figure representation of the problem, held it up to the camera, and began pointing along with extra notes.
[This is you looking like the most beautiful fan in the world. This is the stage, and that’s me singing on it. The squiggles are air. If you wanted to set eyes on your favorite singer before you heard their voice, since the sound would be traveling to you at about 331 meters per second, you would have to become the Flash and somehow move faster than that. And for the next part of the problem? Let me rephrase it this way: let’s say your weight is 64.5 kg, your lightstick is .5 kg, your goodie bag is 5 kg, the headwind is 6 m per second, and you are 1200 m from the stage. How fast can you get there if you put all your energy into it?]
[ICUP says BTZ is their favorite singer, not me, and they can teleport to the stage because of the amount of love they have for BTZ. Wow. I’m jealous. Unfortunately, the rest of humanity hasn’t unlocked teleportion, so we have to run, so if we add the mass, calculate windspeed, utilize the constants we wrote earlier...]
More scribbles and pictures were drawn, and Rachel found herself nodding along as she slowly understood the explanation.
[And for the next part, you need to calculate the speed and how to reduce air resistance? Okay, so imagine your lightstick is in a tear drop shape, I think the group Dozen has those and it’s held at an 87-degree angle with the point facing forward, and you’re running at full force behind the lightstick, using the formula we derived earlier, let’s both calculate and see if we get the same answer?]
Somehow, Rachel found herself pulling out her notebook, writing down the formulas, and solving the problem along with Ari as he explained it in terms that made sense to her.
[Let’s show each other our answer on 3. 1. 2. 3!]