Dr Madhvi and Er Akash

2:04

The graph shows the variation of the displacement of a wave with distance along the wave. The wave

28 күн бұрын

4:40

A transverse travelling wave is moving through a medium. The graph shows, for one instant, the

28 күн бұрын

4:13

A travelling wave has a frequency of 500 Hz. The closest distance between two points on the wave

28 күн бұрын

4:08

A sound wave has a frequency of 1.0 kHz and a wavelength of 0.33 m. What is the distance travelled

28 күн бұрын

2:26

A travelling wave on the surface of a lake has wavelength . Two points along the wave oscillate with

28 күн бұрын

4:33

A wave travels along a string. Graph M shows the variation with time of the displacement of a point

28 күн бұрын

4:44

A wave of period 10 ms travels through a medium. The graph shows the variation of particle displacem

28 күн бұрын

2:08

What is the order of magnitude of the wavelength of visible light?

28 күн бұрын

2:50

The graph shows the variation with distance of the displacement of the particles in a wave. The freq

28 күн бұрын

3:19

A sound wave travels through a gas at a speed of 270 m s . The graph shows the variation of the

28 күн бұрын

4:32

A longitudinal wave is travelling through a medium. The variation with distance d of the displacemen

28 күн бұрын

2:00

An electromagnetic wave has a wavelength that is about the size ofthe diameter of an atom. What

28 күн бұрын

4:37

An object at the end of a spring oscillates vertically with simple harmonic motion (shm). The graph

Ай бұрын

4:14

Object P moves vertically with simple harmonic motion (shm). Object Q moves in a vertical circle

Ай бұрын

2:51

A mass on a spring is displaced from its equilibrium position. Which graph represents the variation

Ай бұрын

3:55

Which graph shows the variation with time t of the kinetic energy (KE) of an object undergoing simpl

Ай бұрын

3:39

The four pendulums shown have been cut from the same uniform sheet of board. They are attached to

Ай бұрын

2:53

An object undergoes simple harmonic motion (SHM) of amplitude .When the displacement of the object

Ай бұрын

2:09

The motion of an object is described by the equation acceleration ∝ − displacement. What is the dire

Ай бұрын

3:56

A simple pendulum and a mass-spring system oscillate with the sametime period. The mass of the pendu

Ай бұрын

4:08

The bob of a pendulum has an initial displacement to the right. The bob is released and allowed to

Ай бұрын

2:09

A mass-spring system oscillates vertically with a period of at the surface of the Earth. The gravit

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4:27

An object performs simple harmonic motion (shm). The graph show show the velocity v of the object

Ай бұрын

2:38

Which is correct for the tangential acceleration of a simple pendulum at small amplitudes?

Ай бұрын

2:56

A particle undergoes simple harmonic motion of amplitude and frequency . What is the average speed

Ай бұрын

3:11

A simple pendulum undergoes simple harmonic motion. The gravitational potential energy of the pendul

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3:09

A particle is moving in a straight line with an acceleration proportional to its displacement and

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2:00

A simple pendulum has a time period on the Earth. The pendulum is taken to the Moon where the gravit

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2:56

A particle undergoes simple harmonic motion. Which quantities of the motion can be simultaneously

Ай бұрын

Пікірлер

@tomaschensandi3111 9 күн бұрын

Thank you!

@confectional26 11 күн бұрын

thank you for the explanation :)

@IBStudiesIBstudies 14 күн бұрын

Thanks sir

@IBStudiesIBstudies 17 күн бұрын

i swear saving me

@IBStudiesIBstudies 17 күн бұрын

thanks sir

@IBStudiesIBstudies 20 күн бұрын

thankssss but i didnt understand how when he said the energy transferred it means the change of total energy of the system???

@ibchemistryandphysics 20 күн бұрын

System energy always means constant. Just the change in energy we need to calculate.

@IBStudiesIBstudies 20 күн бұрын

@@ibchemistryandphysics thank you so much

@IBStudiesIBstudies 18 күн бұрын

@@ibchemistryandphysics sir in my last exam i got a 3 and the exam before o got a 4 and i think im gonna fail physics and i dont know what to do. every time i keep answering questions they turn out to be wrong and im losing hope right now

@IBStudiesIBstudies 20 күн бұрын

u r amazing thanks

@IBStudiesIBstudies 20 күн бұрын

thank you

@tomaschensandi3111 22 күн бұрын

Thank you!

@fidias9 Ай бұрын

who is he bruv i was expecting chem girl...

@ibchemistryandphysics Ай бұрын

Hi, she will teach IB chemistry and Er.Akash will teach IB physics. Both subjects will be covered on this channel. 😊

@fidias9 Ай бұрын

@@ibchemistryandphysics ok, but physics has already covered by P.f Varun

@ibchemistryandphysics Ай бұрын

@@fidias9 Prof. Varun is the Best ❤

@AaryaPaudyal-tr6fs Ай бұрын

thanku sir now its east to understandbecause of you

@ibchemistryandphysics Ай бұрын

Thank you Aarya for your valuable feedback.

@song_editz_cf7801 Ай бұрын

thank you sir

@gianmariapellizzari4794 Ай бұрын

where did you get this question from?

@VD23442 2 ай бұрын

which year paper is this

@ASB-ur7xo 2 ай бұрын

thanks

@user-bu7tt7rg5s 2 ай бұрын

Good noon sir

@ibchemistryandphysics 2 ай бұрын

Hello

@emanerekat312 2 ай бұрын

ما فهمت اشي بس استمري ❤

@brominete9 2 ай бұрын

WHERE DID THE MAN'S LEGENDARY BEARD GO 😭

@kenny2426 2 ай бұрын

i am confused as to why the number of moles is multiplied by 1000?

@ibchemistryandphysics 2 ай бұрын

According to question, we have to calculate the answer in the units Kj/mol, so to convert the joules into kilojoules, we have divided the resulting expression by 1000

@muskansondhi1473 2 ай бұрын

hi , how will I do this in paper 1 without a calculator ?

@ibchemistryandphysics 2 ай бұрын

To make the videos short and concise, I have used calculator here. But you can do the calculations at your own in your exam, these are simple calculations.

@user-bg7ms4su1b 3 ай бұрын

Hi I have a question, when the question asks you to write an equation, how do you know the state for the reactants and products? For example P4+6cl2--> 4Pcl3

@heyyy5492 3 ай бұрын

Thank you so much! Is it possible for you to also do paper 2 questions for Hess law? Thank you!

@ibchemistryandphysics 2 ай бұрын

Hi, yes off course, send me all questions on my whatsapp.

@heyyy5492 3 ай бұрын

Hi miss, do you offer any tuition classes? Best regards

@ibchemistryandphysics 2 ай бұрын

Yes, I give online one on one tuition classes. You can contact me at my whatsapp.

@marekkuten4042 3 ай бұрын

Wonderful vides, good luck with your studies!!!

@osamakayyali3550 3 ай бұрын

Thank you for all these videos !

@ibchemistryandphysics 3 ай бұрын

Welcome😊 @osama

@dashasharykina7651 3 ай бұрын

that was really helpful! thank you

@ibchemistryandphysics 3 ай бұрын

You're welcome!😊

@yousufmohammad2494 3 ай бұрын

But since this is a paper 1 question we're not allowed calculators

@shreyashegde7623 3 ай бұрын

Are you by any chance related to Prof. Varun Goyal?

@AlpartunG 4 ай бұрын

thanks for the video! please continue sharing solutions like this dr goyal🙏

@ibchemistryandphysics 4 ай бұрын

Welcome 😊 and sure, I will share new videos soon

@kjy1462 4 ай бұрын

Hi! Thank you so much for your explanation, but may I ask why the smaller peak at m/z = 80 is not taken into consideration?

@ibchemistryandphysics 4 ай бұрын

Yes, because the smaller peaks around 80 are for Br atoms not for molecule but here in the question we have to calculate the molecular mass of bromine molecule

@user-so1xz2fh1c 4 ай бұрын

Thanks love from Bangladesh 🇧🇩🇧🇩

@aetheryt4236 4 ай бұрын

your accent makes it hard to understand

@yousufmohammad2494 3 ай бұрын

i can understand her perfectly fine

@user-bg7ms4su1b 3 ай бұрын

@@yousufmohammad2494 i agree

@user-fz3ik7im5e 4 ай бұрын

thank you for all of these videos, they are truly helpful!! you deserve all the best :D

@ibchemistryandphysics 4 ай бұрын

You're so welcome!😊

@mariazaki2837 4 ай бұрын

THANK YOU SO MUCH!!!!!! Your videos are amazing! Please keep making more!

@user-bg7ms4su1b 4 ай бұрын

Thank you so much

@ibchemistryandphysics 4 ай бұрын

Good luck! 😊

@user-wl2rv7so5v 5 ай бұрын

this helped a lot! thanks a lot

@ibchemistryandphysics 5 ай бұрын

Glad it helped!😊

@serenanam2721 5 ай бұрын

thankyou so much ur videos are so helpful

@ibchemistryandphysics 5 ай бұрын

You're so welcome! 😊 @serenanam2721

@fidias9 5 ай бұрын

I dont understand 2th and 4th one

@HarryPotterMagic1702 5 ай бұрын

Thank you so much!! This is single-handedly saving my IB Past Paper errors!! Lots of love from here!!! 💖

@ibchemistryandphysics 5 ай бұрын

@HarryPotterMagic Happy to help! If you ever need one on one online tuition classes, please contact me

@Perrier05 5 ай бұрын

thank you!

@ibchemistryandphysics 5 ай бұрын

You're welcome! @Perrier05

@kimeuijun7125 5 ай бұрын

I am a current IB student. Your video is really helpful, thanks!

@ibchemistryandphysics 5 ай бұрын

Glad it was helpful! If you ever need one on one online tuition classes, feel free to contact me 😊

@mazenwaleed7117 5 ай бұрын

Ok thanks

@ibchemistryandphysics 5 ай бұрын

Welcome

@user-ts8rc7cn1r 5 ай бұрын

Tnx a lot teacher 😊

@ibchemistryandphysics 5 ай бұрын

You are welcome @user-ts8rc7cn1r

@joannegiovanna 6 ай бұрын

The. Oxidation state of s in s4o62- is +2.5. How do you reconcile that in the half equation ultimately there are 2 electrons being lost? The oxidation state of s in s2o32- is +2 and that of s4o62- is +2.5 so the electrons being lost, as stated in the problem are 2 and they are not even close to what logically would be deduced (half an electron would be logical). What am I missing? Here you show your answer choice by exclusion… but I want to know why is it definitively 2 electrons being lost in the oxidation half equation.

@ibchemistryandphysics 6 ай бұрын

Half electron would not be logical because there is 2S2O3^2- species which actually loosing 2 electrons not S atom so we will consider oxidation state of all 4 S atoms and if we sum up the oxidation state of 4 S atoms of 2S2O3^2- species then it will be 4(2)=8 and of S4O6^2- it will be 4(2.5)=10, so two electrons will be lost in the reaction but oxidation state can not be fractional as I have assumed in the video that there are 4 S atoms in S4O6^2- species out of which if two S atoms have +2 O.S. and two have +3 O.S. then overall 2 electrons will be lost.