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3 years ago

4.

Physics

2 answers:

Firdavs [7]3 years ago

8 0

ITS A!!! UEHHSBSHHWBEBSNIWJWBSBENSJAHWVVSBSISEE

tatiyna3 years ago

6 0

The answer is A. A folkway is a closely held belief by a specific group of people.

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The process of bringing the solvent to boiling, evaporating it all away, and leaving the solute behind, is known as

Georgia [21]

I believe the correct answer from the choices listed above is option D. <span>The process of bringing the solvent to boiling, evaporating it all away, and leaving the solute behind, is known as evaporation. Hope this answers the question. Have a nice day.</span>

8 0

4 years ago

Determine the acceleration that results when a 12 N net force is applied to a 3 kg object.

Vadim26 [7]

Heya!!

For calculate aceleration, let's applicate second law of Newton:

$\boxed{F=ma}$

⇒ Being:

→ F = Force = 12 N

→ m = Mass = 3 kg

→ a = aceleration = ?

Lets replace according formula and leave the "a" alone:

$12\ N = 3\ kg * \textbf{a}$

$\textbf{a} = 12\ N / 3\ kg$

$\textbf{a} = 4\ m/s^{2}$

Result:

The aceleration of the object is of <u>4 m/s²</u>

3 0

3 years ago

A 1.50-m cylinder of radius 1.10 cm is made of a complicated mixture of materials. Its resistivity depends on the distance x fro

MArishka [77]

Answer:

Resistance = 3.35* $10^{-4}$ Ω

Explanation:

Since resistance R = ρ $\frac{L}{A}$

whereas $\rho(x) = a + bx^2$

resistivity is given for two ends. At the left end resistivity is $2.25* 10^{-8}$ whereas x at the left end will be 0 as distance is zero. Thus

$2.25*10^{-8} = a + b(0)^2\\ 2.25*10^{-8} = a + 0 \\2.25*10^{-8} = a$

At the right end x will be equal to the length of the rod, so $x = 1.50\\8.50*10^{-8} = (2.25*10^{-8}) + ( b* (1.50)^2 )\\8.50*10^{-8} - (2.25*10^{-8}) = b*2.25\\\frac{6.25*10^{-8}}{2.25} = b\\b = 2.77 *10^{-8}$

Thus resistance will be R = ρ $\frac{L}{A}$

where A = π $r^2$

so,

$R = \frac{8.50*10^{-8} * 1.50}{3.14*(1.10*10^{-2})^2} \\R=3.35 * 10 ^{-4}$

6 0

3 years ago

What is the upward force that makes things float?

rewona [7]

I think its Buoyancy

8 0

3 years ago

Read 2 more answers

Describe the four factors that affect resistance.

defon

There are four factors affecting resistance which are Temperature, Length of wire, Area of the cross-section of wire and nature of the material. When there is current in a conductive material, the free electrons move through the material and occasionally collide with atoms.

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3 years ago