physics q (3 Viewers)

[eternallyboreduser]

Why is it C? i thought it would be B because we have both weight force and air resistance. The q doesn't mention that air resistance is negligible.

 

[Average Boreduser]

think about the weather, sometimes it may impose external forces on the object

And air is 70% Nitrogen so the atoms in your ball also could experience external forces due to intramolecular attractive forces from nitrogen acting on the ball^

 

[eternallyboreduser]

think about the weather, sometimes it may impose external forces on the object

What???

 

[eternallyboreduser]

Is that not air resistance lmfao, physics is such a ridiculous subject why are there always so many assumptions for everything

 

[Aeonium]

Is that not air resistance lmfao, physics is such a ridiculous subject why are there always so many assumptions for everything

99% of the time you ignore air resistance unless u have something where u hv to identify the flaws of the model

 

[eternallyboreduser]

no but like what if its raining, what happens then? water droplets will exert a downward force on the centre of mass

I realised what u meant after i sent the message LOL so ig just ignore everything?

 

[eternallyboreduser]

ignore the advice that @Aeonium gave, it's garbage

only listen to me, I got a b6

So what is it then

 

[Average Boreduser]

yep that's exactly what I was thinking, you can't forget about the hydrogen particles too

sometimes it may increase drag and resistance forces on the ball

Not forgetting the dipole moments of each atom that likely will lead to transient changes in the balls velocity whilst being exposed to intramolecular forces from the nitrogen and hydrogen. In the chance of rain, we need to also factor Oxygen and its kinetic energy changes when the droplets displace onto the surface of the ball. Also denote any electromagnetic waves as they can change the direction of the initial and impact vector in the proj motion of the ball as it is thrown.

 

[eternallyboreduser]

ok think about it this way, weather is not constant is it right? in physics we need to consider different environments that our object is situated in

what if its hailing? obviously hail fragments would cause the object to centrifugally disorient itself by spinning it on an skewed axis, particularly in the xy plane

does that make sense?

Yeah i understabd what youre tryijf to say but would that mean we ignore it?? becaude the answer is =mg

 

[eternallyboreduser]

Not forgetting the dipole moments of each atom that likely will lead to transient changes in the balls velocity whilst being exposed to intramolecular forces from the nitrogen and hydrogen. In the chance of rain, we need to also factor Oxygen and its kinetic energy changes when the droplets displace onto the surface of the ball. Also denote any electromagnetic waves as they can change the direction of the initial and impact vector in the proj motion of the ball as it is thrown.

WHAT EVEN IS THIS I HAVENT EVEN LEARNT OF THAT

 

[eternallyboreduser]

WHAT?? SERIOUSLY?! ITS ONE OF THE MOST IMPORTANT PARTS

U guys gotta be trolling me rn

 

[Average Boreduser]

Yeah i understabd what youre tryijf to say but would that mean we ignore it?? becaude the answer is =mg

No thats the point of the question. You need to factor in probability/chance of rain and simultaneously integrate changes in temperature experienced by infrared rays. Using Euler's constant, you need to then derive your velocity of your acceleration using your suvat equations. The final step is then to use differentials to generate your 5 solutions for mg. Once you've done this, you test each solution by using the weirstrass substitution.

 

[Average Boreduser]

Then you get final answer = c

 

[Charlie Lu]

yeah ignore the advice that @Aeonium gave, it's garbage

only listen to me, I got a b6

99.90 atar student here: I agree with @Average Boreduser's solution. @Aeonium is likely tricking you in order to gain rank. Not considering air pressure and intermolecular and intramolecular forces from atoms in the air can be fatal in terms of marks. be diligent as this is what differentiates you from the rest of the cohorts.

 

[Average Boreduser]

99.90 atar student here: I agree with @Average Boreduser's solution. @Aeonium is likely tricking you in order to gain rank. Not considering air pressure and intermolecular and intramolecular forces from atoms in the air can be fatal in terms of marks. be diligent as this is what differentiates you from the rest of the cohorts.

Took my first prelim assessment to realise this guys ! dont be like me. factor in inter and intra molecular forces in your calcs!!!!

 

[Average Boreduser]

damnn what did you score?

73% ranking 34/37 in the cohort. Lost my marks because I didn't factor velocity of uv rays and gamma radiation dispersion into my suvat equation of a guy swimming from bank a to bank b at an angle of 34* from north.

 

[brocolights]

73% ranking 34/37 in the cohort. Lost my marks because I didn't factor velocity of uv rays and gamma radiation dispersion into my suvat equation of a guy swimming from bank a to bank b at an angle of 34* from north.

your so real for this

 

[Charlie Lu]

73% ranking 34/37 in the cohort. Lost my marks because I didn't factor velocity of uv rays and gamma radiation dispersion into my suvat equation of a guy swimming from bank a to bank b at an angle of 34* from north.

very unfortunate but at least you realised this before your internal assessments. I was not as lucky, sacrificing my first one when I forgot to factor in bouyancy of water in a 5km radius which may have affected the forces acted on a merry go ride 10 km south of the bank. I also did not consider chance of rain and its added effect on the boayancy which may have rendered the temperature of the puddle next to the merry go to be 0.02*C higher. these calculations severly scewed my resultant velocity of the circular motion.

 

[Aeonium]

99.90 atar student here: I agree with @Average Boreduser's solution. @Aeonium is likely tricking you in order to gain rank. Not considering air pressure and intermolecular and intramolecular forces from atoms in the air can be fatal in terms of marks. be diligent as this is what differentiates you from the rest of the cohorts.

don't teach them laplace equations pls otherwise they'll be unstoppable if they learn second order diff eqns it's over for us

 

[eternallyboreduser]

Yall too funny