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irina [24]
3 years ago
8

I have to write an essay about Quantum Mechanics. I need to know everything about it. Please Help!

Physics
2 answers:
Studentka2010 [4]3 years ago
6 0

ananı var ya ananı

kodumun abd lisi aptal cajhil özürlü

Neporo4naja [7]3 years ago
5 0

Quantum mechanics means dealing with physics at a very small level. Or u can say microscopic level. Studying physics at sub atomic level

Study regarding protons, electrons and quarks include in this study.

Also the laws of physics at normal level fail in quantum mechanics.

Laws like uncertainty principal of Heisenberg, wave nature, are there

(So if u want to write an essay, first u can tell about) the difference between normal sized objects and the subatomic ones. And how physics act upon them

Then u can write about how laws fail for microscopic things so we need to study quantum mechanics.

And elaborate every paragraph like i ve written in points.

hope that will make ur essay complete ♥

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A 1.25-kg ball begins rolling from rest with constant angular acceleration down a hill. If it takes 3.60 s for it to make the fi
miv72 [106K]

Answer:

The time taken is  \Delta t  = 1.5 \ s

Explanation:

From the question we are told that

   The mass of the ball is  m =  1.25 \ kg

    The time taken to make the first complete revolution is  t= 3.60 s

    The displacement of the first complete revolution is  \theta  =  1 rev  =  2 \pi \  radian

Generally the displacement for one  complete revolution is mathematically represented as

       \theta =  w_i t  +  \frac{1}{2} *  \alpha  * t^2

Now given that the stone started from rest w_i  = 0 \ rad / s

     2 \pi =0   +  0.5*  \alpha  *(3.60)^2

     \alpha   =  0.9698 \  s

Now the displacement for two  complete revolution is

         \theta_2  =  2 *  2\pi

         \theta_2  = 4\pi

Generally the displacement for two complete revolution is mathematically represented as  

     4 \pi =   0  +  0.5 * 0.9698 * t^2

=>   t^2  =  25.9187

=>   t=  5.1 \ s

So

 The  time taken to complete the next oscillation is mathematically evaluated as

     \Delta t  =  t_2  - t

substituting values

      \Delta t  = 5.1 -  3.60

     \Delta t  = 1.5 \ s

           

 

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How does the lever arm change if you decrease the angle of the force?
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