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3 years ago

a high school student ran the 100 meter dash in 12.20 seconds. find the velocity in meters per second and kilometers per hour.

Physics

1 answer:

WARRIOR [948]3 years ago

6 0

V= <span>100 m/12,2s
v</span>≈ 8,2 m/s = <span>29,52 km/h</span>

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3 years ago

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FrozenT [24]

The correct answer to fill in the blank would be:

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A screen is placed 1.20m behind a single slit. The central maximum in the resulting diffraction pattern on the screen is 1.40cm

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Answer:

2.8 cm

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$\beta_1=\dfrac{y_1}{2}\\\Rightarrow \beta_1=\dfrac{1.4}{2}\\\Rightarrow \beta_1=0.7\ cm$

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For second order

$\beta_2=\dfrac{m_2\lambda D}{d}\\\Rightarrow \beta_2=\dfrac{m_2\lambda D}{\dfrac{m_1\lambda D}{\beta_1}}\\\Rightarrow \beta_2=\dfrac{m_2}{m_1}\beta_1$

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3 years ago

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3 years ago

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Answer:

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Explanation:

Given that,

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3 years ago