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sashaice [31]
3 years ago
9

Question 5 of 10

Physics
1 answer:
jonny [76]3 years ago
4 0

Answer:

A. The particle model, because only high-energy frequencies of light  can remove electrons .

Explanation:

Each photon of blue light has higher energy than each photon of red light has  . So when each photon strikes each electron , it gets ejected . But the photon of red light has not sufficient energy to eject electron . Once the photon of red light strikes the electron , the energy is wasted off . Energy of photon can not be accumulated . Thus photon behaves like particle .

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1. A large ball was let go on a hill and started rolling down with a constant acceleration of 4.2 m/s². What was the velocity of
pochemuha

Answer:

<em>The velocity after 12s is 50.4m/s</em>.

Explanation:

<em>In acceleration formula make velocity the </em><em>subject.</em>

<em> acceleration(a) = velocity(</em>v)÷time(t)

<h3><em> </em><em>velocity</em><em> </em><em>(</em><em>v)</em><em> </em><em>=</em><em> </em><em>acceleration</em><em>(</em><em>a)</em><em>×</em><em>t</em><em>ime</em><em>(</em><em>t)</em></h3>

<em>V </em><em>=</em><em> </em><em>4</em><em>.</em><em>2</em><em>m</em><em>/</em><em>s²</em><em>×</em><em>1</em><em>2</em><em>s</em>

<em>V </em><em>=</em><em> </em><em>5</em><em>0</em><em>.</em><em>4</em><em>m</em><em>/</em><em>s</em>

<em>Therefore</em><em> the</em><em> </em><em>velocity</em><em> </em><em>after</em><em> </em><em>1</em><em>2</em><em>s</em><em> </em><em>is </em><em>5</em><em>0</em><em>.</em><em>4</em><em>m</em><em>/</em><em>s.</em>

8 0
2 years ago
El ancho de la uña de su dedo meñique se acerca a una unidad metrica comun ¿cual?
BartSMP [9]

Answer:

I have no clue what's really going on I'm just here to get answer maybe I will just try to get an answer but I have no clue I'm sorry I am confused and dint really know what to do here.

3 0
3 years ago
What is the length x of the side of the triangle below? (Hint: Use the cosine function.)
Dimas [21]

<u>Answer</u>

The correct answer is A.

<u>Explanation</u>

The given triangle is a right triangle.

The length of the hypotenuse is 2.5 units.

The given angle is 39\degree.

The unknown side x is adjacent to the given angle.


We can therefore use the cosine function to find x.

Recall the mnemonics CAH.

This means that;

\cos\theta=\frac{Adjacent}{Hypotenuse}


This implies that,

\cos39\degree=\frac{x}{2.5}


We multiply both sides by 2.5 to get,


2.5\cos39\degree=x

x=2.5(0.7771)

We evaluate to get

x=1.94


Therefore the length x of the side of the triangle is 1.9 units to the nearest tenth.



7 0
3 years ago
Some benefits of __________ may increase appropriate social behavior and make uninteresting tasks worth pursuing.
Gnesinka [82]

Answer:

The correct option is C. Some benefits of <u>extrinsic motivation</u>  may increase appropriate social behavior and make uninteresting tasks worth pursuing.

Explanation:

Extrinsic motivation can be described as the courage to do a certain task due to some extrinsic rewards. The extrinsic rewards may be in the form of money, grades, fame etc. A person might change his bad habits or behaviours into good ones to gain fame and popularity. Similarly, tasks that have no values in our eyes may be done with much effort if an external reward is given for them.

6 0
4 years ago
A resistor with a resistance of 2 MΩ is connected in series with a 5 µF capacitor and a battery with emf 10 V. The capacitor has
ehidna [41]
C because it very simple
7 0
3 years ago
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