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evablogger [386]

3 years ago

9

Ava runs track and field and is a long-distance runner. She has a big race coming up and needs to eat food that will provide her

with enough energy to last throughout the race. What food would be best for her to prepare for her race?
A. salad
B. milk
C. apple
D. pasta

2 answers:

Talja [164]3 years ago

6 0

Answer:

A. salad

Explanation:

Tema [17]3 years ago

4 0

A salad most likely

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Answer:

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Explanation:

For protons:

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the relation for the energy and velocity is given by

$E = \frac{1}{2}mv^{2}$

So, $v = \sqrt{\frac{2E}{m}}$ .... (1)

Now,

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Substitute the value of v from equation (1), we get

$r = \frac{\sqrt{2mE}}{Bq}$

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For alpha particle

So, $r_{2} = \frac{\sqrt{2m_{2}E}}{Bq_{2}}$ ... (3)

Where, m2 is the mass of alpha particle, q2 is the charge of alpha particle

Divide equation (2) by equation (3), we get

$\frac{r_{1}}{r_{2}}=\frac{q_{2}}{q_{1}}\times \sqrt{\frac{m_{1}}{m_{2}}}$

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By substituting the values

$\frac{r_{1}}{r_{2}}=\frac{2q}}{q}}\times \sqrt{\frac{m}}{4m}}=1$

So, r2 = r1 = 16 cm

Thus, the radius of the alpha particle is 16 cm.

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