Tushar Pawar Dropper Sample

For photos: save the image, then do a reverse image search (any of the free tools will do) and see where else it appeared and when. A "new" photo from last week often turns out to be from years ago or another country. For videos: take screenshots of a few key moments and reverse-search those. Keep in mind WhatsApp strips most of the original data from a file, so you can't check metadata, you have to find the original source. Also look for the usual fact-check sites, including the government's own fact-check page, to see if the claim was already checked.

3d ago

Handy plot: take logs of the Arrhenius equation, $$\ln k = \ln A - \frac{E_a}{R}\cdot\frac1T$$ So a graph of $\ln k$ against $1/T$ is a straight line with slope $-E_a/R$ and intercept $\ln A$. If the problem gives you the slope (say $-6000$ K), then $E_a = 6000 \times 8.314 \approx 49.9$ kJ/mol. With $\log_{10}k$ instead of $\ln k$ the slope is $-E_a/2.303R$. Watch for which log is used. Also $e^{-E_a/RT}$ is the *fraction* of molecules with $E \ge E_a$, so raising $T$ raises that fraction a lot, which is why rates grow so fast with temperature.

3d ago

Rohan, partly. Both detect the aldehyde group because it's easily oxidised, but they differ in strength. Tollens' reagent (ammoniacal silver nitrate) is the milder-but-effective oxidant that works with both aliphatic and aromatic aldehydes: silver mirror. Fehling's solution is $Cu^{2+}$ in alkaline tartrate, and it oxidises only aliphatic aldehydes: red-brown $Cu_2O$ precipitate. Aromatic aldehydes like benzaldehyde don't respond. Ketones give neither (they can't be oxidised easily). So neither of them is for ketones.

4d ago

Not true for learning Python. I've done everything on a 4 GB machine, including the flashcard script. Python itself is tiny. Heavy stuff like video editing or training big models needs a stronger machine, but a beginner writing scripts doesn't. An old laptop is completely enough. Don't spend money.

4d ago

On HDR: it's fine to leave on in auto mode, it merges a few exposures so you keep sky and ground. But it doesn't fix a bad moment, which is why you didn't see a big difference. If your phone lets you shoot in a "pro" or RAW mode, you get more room to edit the sky and shadows later, but it's not necessary at first. Better to fix light and framing first.

5d ago

I tried the same "study-with-me" video thing and ended up building a small timer overlay for it. Did not study. Built a timer. This is my version of the rainbow notes: productive-looking procrastination. Beautiful post.

5d ago

Correct, I mixed the two. Energy has many forms, momentum doesn't.

5d ago

In inelastic collisions momentum is also not conserved, because some of it is lost as heat and sound, just like KE. Only in elastic collisions are both conserved.

5d ago

Careful, two things wrong there. Cross product magnitude uses **sin**θ (that's what vanishes when vectors are parallel), cosθ is the dot product. And the order matters: $\vec a\times\vec b = -\vec b\times\vec a$. Swap the order and the direction flips. Magnitude stays the same. Dot product is the one that doesn't care about order.

6d ago

Debugging note from a JEE repeater: if your code is failing, you don't type faster. You step away, get water, come back. Same for studying. I should've applied this to my own December.

6d ago

Practical tip: there are free chord sheets and chord-diagram apps that can slow down songs. Also free tuner apps. Keep the guitar tuned, a slightly out-of-tune guitar makes every chord sound wrong and you'll think you're bad when you're not. I spent two weeks thinking my D was wrong and the B string was just flat.

7d ago

"always" is not true Dev. Depends on branch, college, and the year. Some private colleges have solid placements in the branch you want, and some government ones are weak in theirs. Arjun should ask for the median and the number who sat, per branch, for both colleges. And the maths: A = 9.2 + 0.6 for travel = 9.8 lakh; B = 11.2 lakh; so the gap is about ₹1.4 lakh, as he said. It's not nothing but it's not decisive.

7d ago

the one-match-a-month thing is wild but I respect it. i did a hackathon-style version, "gaming is a prize for finishing a task list". worked until i started writing lazy task lists to win faster 😅

7d ago

Race order: solid sphere > disc > hollow sphere > ring. Because $a=\dfrac{g\sin\theta}{1+k^2/R^2}$ and $k^2/R^2$ is: solid sphere $2/5$, disc $1/2$, hollow sphere $2/3$, ring $1$. Smaller value of $k^2/R^2$ gives larger $a$: - solid sphere $\tfrac57g\sin\theta$ - disc $\tfrac23g\sin\theta$ - hollow sphere $\tfrac35g\sin\theta$ - ring $\tfrac12g\sin\theta$ Mass and radius cancel completely. A big ring and a small ring with any masses reach together.

7d ago

good first post. One thing to add. `git add .` adds everything in the folder, including stuff you didn't mean to. Look at `git status` before each commit, or ask for a patch with `git add -p` once you're comfortable. Also: commit messages in present tense, like "add torque notes", a lot of people use that style.

8d ago

harsh, it's 37 episodes. i think you're thinking of the longer shows. kabir, ishaan's list is right. also try Steins;Gate (time travel with rules, 24 episodes in the first season). it's slow in the first few episodes, then very good.

9d ago

Tried my phone against the binocular eyepiece after reading this. Blurry Moon, but a Moon. I'm now thinking about designing a 3D-printed phone holder for it. Will report back if it doesn't fall apart.

9d ago

Kabir, those two are actually different things. Grayscale removes colour, which makes the apps look boring and less tempting. Blue light is a separate thing, handled by a warm "night mode" filter. You can use both, but grayscale doesn't reduce blue light by itself. Mehak, I did the same thing for a month and my trick was blocking the sites on my laptop with a tiny script in my hosts file. It's overkill but I enjoyed building it. Your "friction" point is bang on: anything that takes 2 minutes to undo is enough to break the habit.

10d ago

Edge cases! Joke I tell myself: write the tests before you ask it for the function. If it fails your tests, you caught it in 10 seconds instead of 10 days. Also try asking it for the *failing* input, "give me an input that would break this" works weirdly well

10d ago

At 45° the max height is $\frac{u^2}{4g}$ and the range is $\frac{u^2}{g}$, so $R = 4H$, which is your tanθ = 1 case again. Nothing special about it being "same", it just gives the neat ratio.

10d ago

fair point sara. in a big chat it can get lost. small doubt-group works better than the full-batch one.

12d ago

Okay slightly nerdy but it works: join the batch's group chat (every batch has one) and answer one doubt there. Helping with one doubt does half the job of introducing you. People will say "who's this?" and then they remember your name when they see you in class.

12d ago

Ananya, no: for the same frequency, curves with different intensities in NCERT's $I$–$V$ graph have the **same stopping potential** (the curves cut the voltage axis at the same point) but different saturation currents. Intensity changes the height, not where it stops. Another graph worth knowing: $V_0$ vs $\nu$ is a straight line, since $eV_0 = h\nu - \phi$, i.e. $V_0 = \frac{h}{e}\nu - \frac{\phi}{e}$. The slope is $h/e$ (the same for every metal, that's how Millikan measured $h$), and the intercept on the frequency axis is $\nu_0$. Different metals give parallel lines.

12d ago

siddharth bhai, that "long, ugly month" was me too. the thing that helped was exactly the boring list. i don't think anybody gets out of that month without one. thanks for saying it honestly.

12d ago

that's exactly what the show says, bro. it just says it with a soundtrack 😄 glad the 45 min thing matches your experience.

13d ago

The regulator works because it's one switch in your hand and you can see the result. Now imagine millions of them chained together, and each one copies a signal onto the next. Small errors pile up. With on/off, each stage cleans the signal back to a clear high or low. That's why a digital copy of a file is exact, while a photocopy of a photocopy of a photocopy goes grey and blurry. Also fun fact, computers with three states (ternary) have actually been built in the past, so it's possible. Two just won because it's simpler and more reliable.

13d ago

the shoe squeaks!! yes!! i almost wrote a whole section but my word count was already crying 😂

13d ago

Practical example for $T_c$: a CO2 cylinder holds liquid CO2 at room temperature under high pressure, because room temp (~298 K) is below its $T_c$ of 304 K. But oxygen and nitrogen cylinders hold only compressed gas, since room temperature is far above their $T_c$ (around 155 K and 126 K). You can't liquefy them with pressure alone at room temperature, they have to be cooled first.

13d ago

One thing: with a pen tablet, remember it needs a driver/software installed on your laptop and sometimes on older laptops it's finicky. Check that the tablet works with your operating system before buying. I once bought something that needed a newer OS than my laptop could run and had to return it.

14d ago

Agree on the three-bucket idea. The "shared work" bucket is the one people forget to count. It's like a library that both programs import.

14d ago