06/06/2024 15:02

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Idk what I was doing last night but I woke up with this open in the morning. Interesting stuff!

Hello, Mr. Baksh's students :))

hello

Hi, really educational video. I was wondering if and how one can move the coordinates lines frame to frame. For a project I have, it would be useful to pick as the Cartesian lines’ origin a given point and keep it as such throughout the time Tracker is following a point mass.

in the case of the eclipse isn't its tangent the normal

YOU ARE GOD

This involves guestimating and approximation. Maths isn't about guessing and approximating however. If anyone wants the real formula for finding the slope of a line of best fit it is m(slope) = (n * sum(x*y) - sum(x) * sum(y)) / (n * sum(x^2) - (sum(x)^2) Where m = slope, n = number of data points, sum(x) = the sum of all your x values added together, sum(y) = the sum of all your y values added together, sum(x*y) = the sum of all the values you would get after multiplying each x value by its corresponding y value sum(x^2) = square each X value, then add together all of those values sum(x)^2 = add all X values together, and the square that sum. This will give you the EXACT slope of a line of best fit without any guess work or approximation that will give you an incorrect slope based on guesswork. to find your Y intercept to the exact decimal value also you can use formula b = (sum(y) - m*(sum(x))) / n where m = the slope value you just worked out above. And this will give you a mathematically calculated y-intercept value that isn't based on 'guessing'where the line should run and intercept the y axis. Brian you should really mention this as there is no real place for guessing and approximating in the world of math.. There is a formula for everything and everything should use it's appropriate formula ;)

thank you for sharing 🗿👍

Thank u so much man

how do you do this with mutiple trials

It’s 6AM and I have a physics test in 3 hours, thanks for this video, it is very helpful.

But how can you calculate that line precisely, no guesswork, no approximate stuff. And after that finding the slope. There must be an exact way, the same way a computer would find it, and the computer HAS to have an algorithm. That's what I'd like to know. Thank you!

Thanks

Thanks 🙏🏻

Thanks for this amazing video. I just watched it for my exam. It helped a lot.

Thank you soo soo much for this!! You helped me understand a whole hour of a boring lecture in just 5 minutes! Thank you! You've helped me a lot! <3

You are hot.

so I just pick random points wherever I feel like it to determine slope?

I am in my second week at uni, and I've discovered that all of the pretty much all the uncertainty propagation formulas we are taught in IB are FALSE. So learn them well for the exam, but forget about it after the exams

Very useful

CUCEI (Mex) Student here, thank you so much, you save my life

thanks for your clip

Thank you, helps me with my phyics studying

Junior physics 2/23/21

So it bends towards when it at incidence and then away from the normal when it’s leaving at refaction. (And off course some of it gets reflected) THANK YOU SO MUCH, have a blessed day :)

I'm not understanding why at 05:51 the +/- is 5mm... Can anyone help?

sir, how can you measure the emf without the effect of the internal resistance?

tried to solve it first and i got it wrong :D

How to draw the normal line ? Is to supposed to be perpendicular to surface or wrt what??

i am doing year 11 physics and this really helped to do one of my assessment

I know this is a really old video, but thank you so much for taking the time to do this!! This will be really useful for the data processing portion of my Chemistry IA☺️

Thank you so much Sir! You are a life saver!

Yea but the average at 6:00 is actually 1561.6 mm and not 1563mm.

TY PERFECT VID I NEEDED IT FOR SCIENCE ITS RLlY HARD AHH

Hi Brian, hope all is well. Quick question for you I’m doing a lab where I throw the ball from one place to another across the room and I’m using tracker. It’s a lab and they want us to estimate the maximum height of the ball traveled above my hand, not the earth. What would be the steps you would have to do to measure this in tracker? How do I find the height of the ball above the hand? It is standing from one side and throwing it in an arcing motion to the other. It’s not in the single position like this video that they want us to measure the height. If you could help me with this I would greatly appreciate it.

You are ze best. Zenkyu very much :)

IB students apreciate this a hell of a lot, so thanks!

This is not the way you find the propagation of errors of a calculated quantity such as the area of a box you did it. Please review this link from Harvard University ipl.physics.harvard.edu/wp-uploads/2013/03/PS3_Error_Propagation_sp13.pdf

I'm not even in IB anymore what am I doing??????

go bells

Hey Brian, great video. Helped me with my physics lab. I have a question? Why does the velocity and acceleration data do not start in the first frame when shown recorded values? Thanks, Mark

I am getting the A value as -756 instead of -4.9 for the curve Edit- I didn't add the distance. I got -4.9 now

Also, on your measurement of digital voltmeter, I would have liked you to mention what to do when there are lower end figures fluctuating. Some sensitive devices fluctuates at the lower ends a lot. Also the source you are measuring can itself be fluctuating very slightly. So it is necessary to cut off the lower ends of the values and decide how many significant figures are reliable reading.

I would like to ask a question on your take on the analog voltmeter reading. I would quote the reading as 22.5 plus or minus 0.5V. The needle has definitely passed the 22V mark and it seems to be between the 22V and 23V marks. Am I wrong?

Great help as I am preparing for another year of possible shut downs. Just a comment. If you double click on the statistics box, and go to appearance, you can increase the font size to 22 or 24, and then you can see it easily. I know because I can't read my students' statistic boxes unless they do that for me. Thank you for this video!!!

Mark 11:00 This may account for heat gain day time. What about heat loss by night? Remains 29 days?

You are a life savior. Thanks a million!!!

Im quite confused bcs other videos would tell that uncertainty of measurement would be equal to the resolution or the least count, can u somehow explain it sir? Thnks