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3 years ago

12

PLEASE HELPPP ASAP

1 answer:

rodikova [14]3 years ago

7 0

Answer:

b

Explanation:

The legend of King Arthur is well-known in literature. Based on Unsolved Mysteries of History, there is little to suggest it is true. Do you think it is important for people to believe in legends like King Arthur even if there is little evidence to support them? Why or why not? Write a short (3 paragraphs) explanatory essay stating your opinion. Justify your opinion and conclusions with relevant textual evidence (quotes or paraphrased ideas from sources) and background knowledge. Remember to use relevant vocabulary from the text in your essay.l

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3 years ago

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The speed is $\sqrt{2}v_{0}$ .

(a) is correct option.

Explanation:

Given that,

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Potential difference $V'=2V_{0}$

We need to calculate the speed

Using formula of initial work done on proton

$W = q V$

We know that,

$\Delta W=\Delta K.E$

$q V=\dfrac{1}{2}mv^2$

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If it were accelerated instead through a potential difference of $2 V_{0}$ , then it would gain a speed will be given as :

Using an above formula,

$v_{0}'^2=\dfrac{2qV_{0}}{m}$

Put the value of $V_{0}$

$v_{0}'^2=\dfrac{2q\times2V_{0}}{m}$

$v_{0}'=\sqrt{\dfrac{4qV_{0}}{m}}$

$v_{0}'=\sqrt{2}v_{0}$

Hence, The speed is $\sqrt{2}v_{0}$ .

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3 years ago