Spahn's Science Lectures
Spahn's Science Lectures
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College Physics 2: Lecture 12 - EMF, Resistance, and Ohm's Law
zhlédnutí 3KPřed rokem
Note: Old video recording being uploaded now.
Channel Update: Lightboard and More!
zhlédnutí 320Před rokem
Over my winter break, I spent a lot of my time building a lightboard and setting up my home office for the primary purpose of creating videos both for my students and for this channel. This video begins with a tour of the new setup before showing you a sample of what it can do. This is all very new, and I still have some kinks to work out, but I am very excited to enter this new stage in conten...
January 4: Perihelion Day - The Day We are Closest to the Sun!
zhlédnutí 788Před rokem
Today (January 4th) we are at perihelion, which means that we are the closest to the Sun that we get in orbit! But it is winter (in the northern hemisphere), so shouldn't it be warmer if we are closer to the Sun? Let's discuss...
College Physics 1: Lecture 30 - Conservation of Energy
zhlédnutí 4,1KPřed rokem
In this lecture, we discuss conservation of energy and solve a couple conservation problems. 0:00 Conservation of Energy 3:21 Problem-Solving Strategy 7:57 Example 1 17:45 Example 2
College Physics 1: Lecture 29 - Forms of Energy
zhlédnutí 3,1KPřed rokem
In this lecture, we discuss the four main forms of energy that we will use and introduce an equation for each. 0:00 Kinetic Energy 7:23 Example 1 13:44 Gravitational Potential Energy 18:36 Example 2 21:20 Elastic Potential Energy 27:19 Example 3 29:45 Thermal Energy 35:10 End of Lecture Questions
College Physics 1: Lecture 28 - Work and Energy
zhlédnutí 4,6KPřed rokem
In this lecture, we introduce work and energy with a discussion of the different types of energies and how they may be transformed and/or transferred. This sets the foundation for us to bring it all together with conservation of energy in upcoming discussion(s). 0:00 Forms of Energy 7:06 Energy Transformation 10:23 Energy Transfer 12:36 Work-Energy Equation 14:33 Work 23:24 Example 1 27:23 End ...
College Physics 1: Lecture 27 - Conservation of Momentum
zhlédnutí 3,1KPřed rokem
In this lecture, we introduce an important law of physics - conservation of momentum. This is the first conservation law we deal with, and many problems can be solved via it's application. 0:00 Conservation of Momentum 10:08 Example 1 17:52 Example 2 24:15 Example 3 40:17 End of Lecture Questions
College Physics 1: Lecture 26 - Impulse and Momentum
zhlédnutí 3,5KPřed rokem
In this lecture, we introduce impulse and momentum as we begin our analysis of the interaction between objects during a collision. 0:00 Impulse 8:13 Example 1 13:10 Momentum 19:02 Impulse-Momentum Theorem 24:09 Example 2 28:50 End of Lecture Questions
College Physics 1: Lecture 25 - Moment of Inertia and Rotational Dynamics
zhlédnutí 3,7KPřed rokem
In this lecture, we introduce moment of inertia and then bring all of our rotation topics together to solve rotational dynamics problems. Angular velocity, angular acceleration, torque, center of gravity, moment of inertia, etc. all combine to make our lives a little difficult. 0:00 Moment of Inertia 9:24 Example 1 18:35 Moment of Inertia for Common Shapes 21:25 Rotational Dynamics 24:37 Exampl...
College Physics 1: Lecture 24 - Torque and Center of Gravity
zhlédnutí 4KPřed rokem
In this lecture, we continue our discussion of rotational motion with the concepts of torque and center of gravity. 0:00 Torque 9:57 Example 1 16:33 Gravitational Torque and Center of Gravity 22:02 Example 2 28:51 End of Lecture Questions
College Physics 1: Lecture 23 - Rotational Motion
zhlédnutí 4,4KPřed rokem
In this lecture, we introduce rotational motion with a discussion of angular position, angular velocity, and angular acceleration. 0:00 Angular Position 5:30 Angular Velocity 12:36 Example 1 19:38 Angular Acceleration 27:30 Example 2 34:32 End of Lecture Questions
College Physics 2: Lecture 9 - Calculating Electric Potential
zhlédnutí 4,5KPřed 2 lety
In this lecture, we analyze how to calculate the electric potential both at a point between the plates of a parallel plate capacitor and at a point in space around a point charge. Referenced video link: mediaplayer.pearsoncmg.com/assets/secs-figurevideo-ch21 0:00 Potential and capacitor review 4:05 Potential in a parallel plate capacitor 12:47 Equipotential lines and surfaces 15:57 Example 1 26...
College Physics 2: Lecture 8 - Electric Potential and Conservation of Energy
zhlédnutí 4,5KPřed 2 lety
In this lecture, we analyze how energy can be used to describe the behavior of charges in electric fields by use of conservation of energy. 0:00 Electric field analogy 3:52 Electric potential vs. potential energy 6:03 Waterfall analogy of electric potential energy 10:26 Conservation of energy 19:17 Example 1 23:37 Example 2 31:28 End of lecture question
College Physics 2: Lecture 7 - Electric Potential and Potential Energy
zhlédnutí 6KPřed 2 lety
In this lecture, we are presented with a basic introduction to the concepts of electric potential and electric potential energy. We learn how a potential difference (voltage) is created and what creates them.
College Physics 2: Lecture 6 - Conductors and Electric Fields
zhlédnutí 5KPřed 2 lety
College Physics 2: Lecture 6 - Conductors and Electric Fields
College Physics 2: Lecture 5 - Applications of the Electric Field
zhlédnutí 6KPřed 2 lety
College Physics 2: Lecture 5 - Applications of the Electric Field
College Physics 2: Lecture 4: The Electric Field
zhlédnutí 9KPřed 2 lety
College Physics 2: Lecture 4: The Electric Field
College Physics 2: Lecture 3 - Coulombs Law
zhlédnutí 9KPřed 2 lety
College Physics 2: Lecture 3 - Coulombs Law
College Physics 2: Lecture 2 - Charge, Charging, and Atoms
zhlédnutí 9KPřed 2 lety
College Physics 2: Lecture 2 - Charge, Charging, and Atoms
College Physics 2: Lecture 1 - Experimenting With Charge
zhlédnutí 30KPřed 2 lety
College Physics 2: Lecture 1 - Experimenting With Charge
College Physics 1: Lecture 22 - Apparent Forces, Orbits, and Gravity
zhlédnutí 4,6KPřed 2 lety
College Physics 1: Lecture 22 - Apparent Forces, Orbits, and Gravity
College Physics 1: Lecture 21 - Solving Circular Dynamics Problems
zhlédnutí 4,6KPřed 2 lety
College Physics 1: Lecture 21 - Solving Circular Dynamics Problems
College Physics 1: Lecture 20 - Circular Motion
zhlédnutí 7KPřed 2 lety
College Physics 1: Lecture 20 - Circular Motion
College Physics 1: Lecture 19 - Interacting Objects, Ropes, and Pulleys
zhlédnutí 4,4KPřed 2 lety
College Physics 1: Lecture 19 - Interacting Objects, Ropes, and Pulleys
College Physics 1: Lecture 18 - Friction and Drag
zhlédnutí 5KPřed 2 lety
College Physics 1: Lecture 18 - Friction and Drag
College Physics 1: Lecture 17 - Weight, Apparent Weight, and Normal Force
zhlédnutí 4,7KPřed 2 lety
College Physics 1: Lecture 17 - Weight, Apparent Weight, and Normal Force
College Physics 1: Lecture 16 - Dynamics and Newton's Second Law
zhlédnutí 5KPřed 2 lety
College Physics 1: Lecture 16 - Dynamics and Newton's Second Law
College Physics 1: Lecture 15 - Equilibrium and Newton's Second Law
zhlédnutí 6KPřed 2 lety
College Physics 1: Lecture 15 - Equilibrium and Newton's Second Law
College Physics 1: Lecture 14 - Newton's Laws and Free-Body Diagrams
zhlédnutí 8KPřed 2 lety
College Physics 1: Lecture 14 - Newton's Laws and Free-Body Diagrams

Komentáře

  • @VideoGames_Wizard
    @VideoGames_Wizard Před 2 dny

    What it says "a rope" not two ropes?????

  • @highpercentage
    @highpercentage Před 2 dny

    im crying so hard rn

  • @robertschmidt8624
    @robertschmidt8624 Před 2 dny

    This American feels very strongly the United States needs to switch to the Metric system! English system of measurement grossly outdated and innefficient.

  • @isaacyao7977
    @isaacyao7977 Před 3 dny

    Thanks soooo much sir for the lecture

  • @Vikermajit
    @Vikermajit Před 6 dny

    ...1m + ym...

  • @Vikermajit
    @Vikermajit Před 6 dny

    Is there a mistake or am I missing something?....coz it is stated that the 'bed' is 1m above the ground, but that's just part of the length of the'opposite'...there is also the height of the side barrier, where the hypotenuse incline rests. So, the length of the 'opposite', should be 1m(ground to bed), and ym from bed to top of barrier...

  • @Vikermajit
    @Vikermajit Před 6 dny

    Awesome videos. Expert teaching. Just the pace of explanation required for beginners. Tqvm, master. God bless.

  • @heywardhall1489
    @heywardhall1489 Před 7 dny

    Your math for a teaspoon of neutron star material compared to cars on earth is wrong. 10,000,000 tons 1 car weighs 2 tons. 2500 cars weigh 5000 tons, not 10,000,000 tons. It would take 5,000,000 two ton cars to equal 10,000,000 tons, or 1 teaspoon of a neutron star's material. I'm enjoying the lecture though. I'll definitely watch all of these! I'm currently studying an online astronomy course (mostly ready) and decided to find some lectures just to change it up. I look forward to listening/watching all of them! Thank you for posting these on CZcams!

  • @jessicapilling7317
    @jessicapilling7317 Před 15 dny

    Really good job explaining. Thank you.

  • @JohnMarkBurila
    @JohnMarkBurila Před 18 dny

    Hi. Your discussion is clear and informative. May I ask if you can share your slide presentation and reference book for this lecture? I am glad to adopt and use it in my undergraduate class in astronomy. Thank you.

  • @limeslyx-z9453
    @limeslyx-z9453 Před 19 dny

    The negative exponent rule can be thought of as 5he subtraction rule, Its x^0/x^m which becomes x^(0-m) or x^-m. x^0/x^m also = 1/x^m

  • @rafaa2544
    @rafaa2544 Před 20 dny

    Time still goes only forward 26/7/2024 😅

  • @er362
    @er362 Před 22 dny

    Do you have any lectures continuing into electromagnetic waves?

  • @soyouthinkyoucan...9361

    What about waves

  • @user-fq9nr3iz1q
    @user-fq9nr3iz1q Před 25 dny

    any person tell me the earth is round the sun or sun is around the earth

  • @abrahamhamadi2804
    @abrahamhamadi2804 Před měsícem

    Is electric potential energy also a scalar like electric potential?

  • @nafishajakia3128
    @nafishajakia3128 Před měsícem

    thank you sir, for your lecture, it really helps a lot. i am really really really Greatfull to you!

  • @mystry3562
    @mystry3562 Před měsícem

    Hello sir! I just wanted to let you know that these videos are a great help, studying for exams rn and I felt so lost bc I couldn't afford tutors or review centers... I really appreciate this playlist, it helps sm 🙏. God bless you

  • @Tasty-crony
    @Tasty-crony Před měsícem

    Thank you!

  • @abrahamhamadi2804
    @abrahamhamadi2804 Před měsícem

    For question 3, how do the spheres remain charged despite the rod being removed?

  • @EmilyCorriveau-dk7yu
    @EmilyCorriveau-dk7yu Před měsícem

    I should of been following these lectures when i was 19. lol

  • @thepinoyphysicsteacher9529

    This is very informative!

  • @EmilyCorriveau-dk7yu
    @EmilyCorriveau-dk7yu Před měsícem

    Science has always been an interest of mine, i tried Biology course in college which didn't work out. but now i'm totally interested in Astronomy and will be using these lectures to prepare for college. :) Thank you!

  • @williamballard7251
    @williamballard7251 Před měsícem

    Thank you for explaining this

  • @JoudHajSakor
    @JoudHajSakor Před 2 měsíci

    Hi! You are an amazing lecturer. You mentioned "if you have my actual course" how do I access this/purchase it?

  • @WillManage925
    @WillManage925 Před 2 měsíci

    trying again for retakes . İ NEVER SEEN YOUR CHANEL SPAHN SCİENCE BUT İ BELEİVE YOU AND KİNDA BELEİVE MYSELF

  • @anniglass6142
    @anniglass6142 Před 2 měsíci

    Anyone else get 60 cm and -30 cm for Q3? @31:13 Distance was ... 40 to 15, 15 to 30, 30 to 10 so... (40-15)+(30-15)+(30-10) = 60 Did I do the math wrong?

  • @beyoncecompton4595
    @beyoncecompton4595 Před 2 měsíci

    tyyyy this helped a lot

  • @3mandude601
    @3mandude601 Před 2 měsíci

    That nebula picture is actually the coolest image I've ever seen. It almost looks like the dark nebula is some kind of monster consuming the cosmos.

  • @ely_rocks
    @ely_rocks Před 2 měsíci

    I'm an italian university student, and you managed to explain the basics of algebra in 30 minutes, while other teachers manage to do that in 8 lessons (if you're lucky). Keep up the good work, my friend <3

    • @asdasvelet6243
      @asdasvelet6243 Před 8 dny

      which university?

    • @ely_rocks
      @ely_rocks Před 8 dny

      @@asdasvelet6243 università della Tuscia at Viterbo (In Italy near Rome)

  • @awrist835
    @awrist835 Před 2 měsíci

    I am so thankful that I found your videos in time, I think you honestly saved me from my exam, your explanation is easy and straight forward to the topic related, whereas I see my professor tends to explain the topic in wayy to much details, and it becomes really redundant information that I don't need. Thank you so much :)

  • @Anubis10110
    @Anubis10110 Před 2 měsíci

    I hope all teachers are like you

  • @gunatillekaleslie3521
    @gunatillekaleslie3521 Před 2 měsíci

    I don’t understand why the lecture is called “College level “. Looks more like “O Level “

    • @deathbysvent
      @deathbysvent Před 7 dny

      "College level" means regular high school physics. It is algebra based. It has to do with a few factors why they call it that. It would be better to just call it Algebra-based Physics, but college means high school in England and it makes it seem more advanced and better for transcripts in US schools. There is a level lower called "Concept-based Physics", which is physics with no math. So that would be used in areas that are extremely bad at math.

  • @AliEgemenB
    @AliEgemenB Před 3 měsíci

    Bro this video is awesome. Thanks for it.

  • @johnsmith-gk4td
    @johnsmith-gk4td Před 3 měsíci

    Awesome lecture

  • @gonnieben-tal8186
    @gonnieben-tal8186 Před 3 měsíci

    Thanks for sharing this content! At around 41:20, for #4, wouldn't the electric potential energy increase from point 'i' to point 'f'? At point 'i', both positives should be canceling each other out, leaving the electric potential energy at 0. At point 'f', if we do a vectors sum, the two positives should be pushing our positive test charge straight up, meaning it'll have some electric potential energy. So I think point 'f' would have a higher electric potential energy than point 'i'. Correct me if I'm reading it wrong!

  • @juliabennett3136
    @juliabennett3136 Před 3 měsíci

    I don't understand the table at around 22.41. Firstly, if the orange bars represent new temperature records shouldn't each be taller than the last? The first four, in 2009 and 2010 are successively taller, but the next orange bar is shorter. Secondly, what average is referred to , that all the differences are positive? If it's over the time period in the graph, some should be negative.

  • @kevinsullivan454
    @kevinsullivan454 Před 3 měsíci

    When you view something, how do you know if you're looking at a small object close up or a large object far away?

  • @necdetegementurkmen5521
    @necdetegementurkmen5521 Před 3 měsíci

    Is it me or is there an error with the units and calculation in example 28.1 at 23:24?

  • @godislove.7421
    @godislove.7421 Před 3 měsíci

    Thank you Sir.

  • @godislove.7421
    @godislove.7421 Před 3 měsíci

    Thank you Sir

  • @johntan6042
    @johntan6042 Před 4 měsíci

    thanks for your lectures

  • @antic_moeps
    @antic_moeps Před 4 měsíci

    perfect lecture.❤❤❤🤓🧐

  • @ruizz6674
    @ruizz6674 Před 4 měsíci

    thanks

  • @EllaIonescu-hr8jw
    @EllaIonescu-hr8jw Před 4 měsíci

    i got a 31 on my first physics midterm and a 66 on my second one after mainly learning concepts through your videos. Thank you for the clear and thorough explanations! I appreciate how you connect the formulas through logic and explanation rather than just throwing them on the screen and not explaining why they are what they are.

  • @user-rm6nw8sy1d
    @user-rm6nw8sy1d Před 4 měsíci

    Hello! Very instructive and informative lecture! However I have to point out that it needs a little refining. Others have pinpointed the poor analogy of the mass of a teespoon of neutron star material and cars... I have to mention that the earth's radius and not the diameter is about 6370000 m as mentioned at 52:37!

  • @ForexLearnerAI
    @ForexLearnerAI Před 5 měsíci

    To me the last question's answer doesn't make any sense. How come the car is not falling or accelerating downwards if the net force is downwards and nothing is acting against it?!

  • @tomren165
    @tomren165 Před 5 měsíci

    Thank you!

  • @thomasstokes1949
    @thomasstokes1949 Před 5 měsíci

    I'm a Engineering major and about to take Intro to Physics. Thank you for this resource sincerely