3 years ago

PLS HELP ASAP!!!!!!!!!!!!!!!!!1

Physics

1 answer:

Scorpion4ik [409]3 years ago

8 0

Answer C. the correct amount of

You said you picked D the correct amount of when D says somewhat too much

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A less-dense liquid of density rho1 floats on top of a more-dense liquid of density rho2. A uniform cylinder of length l and den

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Answer:

Explanation:

Given

$\rho=density\ of\ cylinder\\\rho_1=less\ dense\ cylinder\\\rho_2=more\ dense\ cylinder$

Suppose V is the volume of a cylinder

Also $L_1=length\ in\ less\ dense\ part\\L_2=length\ in\ dense\ part\\L=length\ of\ cylinder\\V=A\times L\\where\ A=area\ of\ cross-section\\$

Now, we can write

The weight of the cylinder is supported by the buoyant forces of two liquids

$\rho Vg=\rho_1 V_1g+\rho_2 V_2g\\\rho ALg=\rho_1 A\times L_1g+\rho_2 A\times L_2g\\\\\rho L=\rho_1 L_1+\rho_2 L_2\\Also, L=L_1+L_2$

using the above equation we can write

$L_2=\frac{\rho-\rho_1}{\rho_2-\rho_1}\cdot L\\\frac{L_2}{L}=\frac{\rho-\rho_1}{\rho_2-\rho_1}$

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3 years ago

Which organisms play roles similar to organisms in water ecosystem

lina2011 [118]

Is there a multiple choice?

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4 years ago

An electron, tial well may be anywhere within the interval 2a. So the uncertainty in its position is Î”x= 2a. There must be a co

lapo4ka [179]

Answer:

$K = \frac{h'}{8 m \ \Delta x^2}$ K

Explanation:

The Heisenberg uncertainty principle is

Δx Δp ≥ h' / 2

h’ = $\frac{h}{2\pi }$

The kinetic energy of a particle is

K = ½ m v²

p = mv

v = $\frac{p}{m}$

substitute

K = $\frac{1}{2} \frac{p^2}{m}$

from the uncertainty principle,

Δp = $\frac{h'}{2 \ \Delta x}$

we substitute

K = $\frac{1}{2m} ( \frac{h'}{2 \ \Delta x})^2$

$K = \frac{h'}{8 m \ \Delta x^2}$

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3 years ago

What does the law of conservation of energy state about both sides of the chemical reaction

lesya [120]

Answer: D

Explanation: Energy is neither created nor destroyed so the amount of reactants and products must be equal

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If you add together all of the forces exerted on a object and get a non zero value that is called

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Hello There!

<em>If you add together all of the forces exerted on a object and get a non zero value that is called the "NET FORCE" of the object</em>

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3 years ago

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