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satela [25.4K]
3 years ago
5

Can someone answer questions 1-3 please.

Physics
1 answer:
Lunna [17]3 years ago
4 0

Answer:

Question 1 is C.

thats all ik

Explanation:

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How many infrared photons of frequency 2.57 x 1013 Hz would need to be absorbed simultaneously by a tightly bound molecule to br
victus00 [196]

Answer:

94

Explanation:

f = 2.57 x 10^13 Hz

E = 10 eV = 10 x 1.6 x 10^-19 J = 1.6 x 10^-18 J

Energy of each photon = h f

Where, h is Plank's constant

Energy of each photon = 6.63 x 10^-34 x 2.57 x 10^13 = 1.7 x 10^-20 J

Number of photons = Total energy / energy of one photon

N = (1.6 x 10^-18) / (1.7 x 10^-20) = 94.11 = 94

6 0
2 years ago
Which system of government has a leader that takes power by force
kvv77 [185]

Answer:

The Autocratic system of governance

Explanation:

<em>Thi</em><em>s</em><em> is</em><em> </em><em>b</em><em>ecause</em><em>,</em><em>in </em><em>Autocratic</em><em> </em><em>sy</em><em>stem</em><em> </em><em>of</em><em> </em><em>gover</em><em>nance</em><em> </em><em>decis</em><em>ion</em><em> </em><em>maki</em><em>ng</em><em> </em><em>is</em><em> </em><em>don</em><em>e</em><em> </em><em>by</em><em> </em><em>onl</em><em>y</em><em> </em><em>indi</em><em>vidual</em><em>.</em><em> </em><em>And</em><em> </em><em>his</em><em>/</em><em>her</em><em> </em><em>dec</em><em>ision</em><em> </em><em>is</em><em> </em><em>fina</em><em>l</em><em>.</em>

5 0
2 years ago
Read 2 more answers
The capacitance of a fully-charged capacitor is 11 F. Determine the capacitor's capacitance when it is half charged.
Tcecarenko [31]

Answer:

The capacitance is 11 F for half and fully charged capacitor.

Explanation:

Capacitance of capacitor is given by the expression

             C=\frac{\epsilon A}{d}

Where ε is the  vacuum permittivity, A is the area of plates and d is the separation between plates.

So capacitance does not depend upon charge and potential. So capacitance fully and half charged capacitors are same.

Here the capacitance is 11 F for half and fully charged capacitor.

4 0
2 years ago
Is it true that the cell theory states that cells are produced by non living cells
sergeinik [125]
The cell theory states that:

1) All living organisms are composed of one or more cells.

2) The cell is the basic unit of structure and organization in organisms.

3) Cells arise from pre-existing cells.

Your statement is not present, so the answer would be no.

♧
5 0
3 years ago
A school bus weighing 1000 kg slows down from 15 m/s to a stop. What is the change in kinetic energy?
Mashutka [201]

Answer:

They wishin' on me, yuh

I been movin' calm, don't start no trouble with me

Tryna keep it peaceful is a struggle for me

Don't pull up at 6 AM to cuddle with me

You know how I like it when you lovin' on me

I don't wanna die for them to miss me

Yes, I see the things that they wishin' on me

Hope I got some brothers that outlive me

They gon' tell the story, shYit was different with me

Explanation:

6 0
2 years ago
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