Physics, 09.01.2020 04:31 katrinanuez

A2.0-cm-thick bar of soap is floating on a water surface
sothat 1.5 cm of the bar is underwater. bath oil of specific
gravity0.60 is poured into the water and floats on top of the
water. whatis the depth of the oil layer when the top of the soap
is justlevel with upper surface of the oil?

Answers: 3

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Answers

Answer from: princessbrebre4482

Explanation:

Given

thickness of soap bar t=2 cm

thickness underwater t'=1.5 cm

oil is poured in the water with specific gravity=0.6

Soap top surface is just level with the upper surface of oil i.e.

weight of soap is balance by buoyancy effect of oil and water

initially soap is balanced by water

$\rho _s\times A\times 2\times g=\rho _w\times A\times 1.5\times g$

$2\times \rho _s=1.5\rho _w$

if $\rho _s=density\ of\ soap$

$\rho _w=density of water$

$A=area\of\ cross-section$

$d=depth\ of\ soap\ in\ oil$

$\rho _s\times A\times 2\times g=0.6\rho _w\times A\times d\times g+\rho _w\times A\times (2-d)\times g$

$1.5\rho _w=0.6d\rho _w+\rho _w(2-d)$

1.5=0.6d+2-d

0.4d=0.5

$d=\frac{5}{4}$

$d=1.25\ cm$

Answer from: Quest

Ifound this on google “two vectors are equal if they have the same magnitude and direction. they are parallel if they have the same or opposite direction. we can combine vectors by adding them, the sum of two vectors is called the resultant.” i hope this you.

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

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A2.0-cm-thick bar of soap is floating on a water surface
sothat 1.5 cm of the bar is underwate...