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3 years ago

Which objects can be electrically polarized?

Physics

2 answers:

Step2247 [10]3 years ago

6 0

Answer:

The correct answer is "c = neutral objects"

Explanation:

Hello!

Let's solve this!

An object is polarized when it has the same number of electrons as protons. That object is called neutral. When it has excess electrons, it has a negative charge. If you have excess protons, you have a positive charge.

The correct answer is "c = neutral objects"

SIZIF [17.4K]3 years ago

5 0

neutral objects is correct

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The initial concentration of acid ha in solution is 0.39 m. if the ph of the solution at equilibrium is 0.76, what is the percen

Alexus [3.1K]

The percent ionization of the acid is 44.56%

<h3>How can we calculate the percent ionization of the acid?</h3>

To calculate the percent ionization of the acid we are using the formula,

The H⁺ ion concentration [H⁺] = C x,

where, we are given,

C= concentration of the acid.

=0.39 M

x= degree of dissociation of the acid.

And one more thing we are given that, the pH of the acid=0.76.

So from the above statement we can say that,

pH = - log [H⁺]

Or,0.76 = -log [H⁺]

Or, log [H⁺] = -0.76

Or, [H⁺] = antilog -0.76

Or,[H⁺]= 10^-0.76

Or,[H⁺]=0.1738.

Now from the above calculation we know, the H⁺ ion concentration= 0.1738 M.

Now we put the known values in the above equation,

[H+]= Cx

Or,0.1739= 0.39 x

Or, x= 0.4459

From the above calculation we can conclude that the percent Ionization of the acid= 0.4459 X 100= 44.59%≈45%

Learn more about Ionization:

brainly.com/question/1445179

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1 year ago

Johnson is dragging a bag on a ice surface. He pulls on the strap with a force of 112 N at an angle of 45° to the horizontal to

Nady [450]

Answer with Explanation:

We are given that

Force=F=112 N

$\theta=45^{\circ}$

Distance, $s=84 m$

Time, t=3.33 minutes

We have to find the work done by Johnson on the bag and the power generated by Johnson.

Work done, W= $Fscos\theta$

Using the formula

Work done, W= $112\times 84cos45=6652.46 J$

Power, P= $\frac{W}{t}=\frac{6652.46}{3.33\times 60}=33.3 watt$

Using 1 minute=60 s

Hence, the power generated by Johnson=33.3 watt

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3 years ago

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kaheart [24]

Pretty sure a, because it’s a stove and it uses electricity like almost a normal appliance for the kitchen would, the rest are just a natural force without any radiation to occur in them, electricity is the same as technology and believe it or not technology like phones give off radiation, so yeah. hope this was helpful!

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3 years ago

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How did you know if an electric current is<br> flowing in a lightbulb?

sweet [91]

Answer:

if it lights up

Explanation:

electricity

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