Physics, 20.10.2019 01:20 victoriakraus3497

What will be the speed of this recoiling nucleus if the speed of the alpha particle is 3.4×105 m/s ? assume the recoiling nucleus has a mass 57 times greater than that of the alpha particle?

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Answer from: myamiller558

here initially before the recoil of nucleus the system is considered to be at rest

now by the conservation of momentum we can say

P_f = P_i

m_1v_1 + m_2v_2 = 0

now we know that

m_1 = 57 m_2

also it is given that

speed of alpha nucleus is 3.4 * 10^5 m/s

v_2 = 3.4 * 10^5 m/s

now by the momentum conservation equation we will have

57m_2* v_2 = -m_2*3.4*10^5

$v_2 = -\frac{3.4 * 10^5}{57} = -5.9 * 10^3 m/s$

so the recoil speed will be given as 5.9 * 10^3 m/s

Answer from: Quest

quantum mechanics or quantum physics is physics of very small objects (particles) and physical entities.

quantum physics has some parallels to our macro world and some pretty unique ideas which theoretically and mathematically proven to be true even though we will never be able to access them because of our size.

there are many types of particles: subatomic, elementary etc.

subatomic means they are smaller than atom, elementary means they are at the very basis of everything.

subatomic particles are for eg. protons, neutrons but not electrons.

elementary particles are categorised into 3 groups by what they do.

these 3 groups are quarks, leptons and bosons.

light for example is a particle more precisely a photon a part of leptons.

proton (subatomic particle) is made out of 2 up quarks and 1 down quark each of these has a fractional charge like $\frac{1}{3}$ . (i crazy)

most famous scientist who contributed to this physics are:

max planckalbert einsteinerwin schrödingermany

the topic itself us understand a lot and will probably be vastly used in the future (quantum computers, understanding the big bang,

we also must not forget quantum effects like:

superposition (where 1 thing can be this and that at the same time),entanglement (where two particles are seemingly connected by some sort of unknown (or known) force, energy, matter (i know all that can be the same at least it was at the beginning)

and there is more. but probably too much for this answer to be consistent due to my average understanding of this topic.

hope this you understand quantum mechanics a little more. i'm not an expert in the topic (so don't be like wth if you are an expert) but i'm very interested in it.

anyways quantum physics is a very hard topic (harder than physics (perhaps)) therefore searching for every information there is about it and learning it is unfortunately impossible (you can only specialise into 1 - 3 things or more (perhaps

have fun and i wish you luck!

r3t40

Answer from: Quest

B) as the temperature increases, the kinetic energy of the particles increases.|-/

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What will be the speed of this recoiling nucleus if the speed of the alpha particle is 3.4×105 m/s ?...

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