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krek1111 [17]
2 years ago
5

Which of the following is the best example of uniform circular motion? A. A child riding on a constantly spinning merry-go-round

B. A car on a road curving back and forth as it passes through hills C. A pendulum bob swinging back and forth in a curved path D. A baseball that is hit up and out of the park for a home run
Physics
1 answer:
Ulleksa [173]2 years ago
5 0

A. because as the merry-go-round spins the child accelerates towards the center of the merry-go-round at a uniform rate.

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Light of wavelength 608.0 nm is incident on a narrow slit. The diffraction pattern is viewed on a screen 88.5 cm from the slit.
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Answer:

The width of the slit is 0.167 mm

Explanation:

Wavelength of light, \lambda=608\ nm=608\times 10^{-9}\ m

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The distance on the screen between the fifth order minimum and the central maximum is 1.61 cm, y = 1.61 cm = 0.0161 m

We need to find the width of the slit. The formula for the distance on the screen between the fifth order minimum and the central maximum is :

y=\dfrac{mD\lambda}{a}

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a=\dfrac{mD\lambda}{y}

a=\dfrac{5\times 0.885\ m\times 608\times 10^{-9}\ m}{0.0161\ m}

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So, the width of the slit is 0.167 mm. Hence, this is the required solution.

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