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3 years ago

9

Consider a uniform hoop of radius r and mass m rolling without slipping. which is larger, its translational kinetic energy or it

s rotational kinetic energy?

1 answer:

OlgaM077 [116]3 years ago

3 0

<span>translational kinetic energy is larger than its rotational kinetic energy</span>

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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

andrew11 [14]

Answer:

2.8 cm

Explanation:

$y_1$ = Separation between two first order diffraction minima = 1.4 cm

D = Distance of screen = 1.2 m

m = Order

Fringe width is given by

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

Fringe width is also given by

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

For second order

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

Distance between two second order minima is given by

$y_2=2\beta_2$

$\\\Rightarrow y_2=2\dfrac{m_2}{m_1}\beta_1\\\Rightarrow y_2=2\dfrac{2}{1}\times 0.7\\\Rightarrow y_2=2.8\ cm$

The distance between the two second order minima is 2.8 cm

8 0

3 years ago

What type of mirror can produce both<br> converging and diverging rays?

Ivahew [28]

Answer:

A convex mirror is a diverging mirror (f is negative) and forms only one type of image. It is a case 3 image—one that is upright and smaller than the object, just as for diverging lenses.

Explanation:

hope this helps have a good night :)

4 0

2 years ago

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PLEASE HELP ASAP!!!

Hatshy [7]

The distance the spring stretches is the answer.

I hope this helps.

Have a nice day.

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3 years ago

Which of the following questions best highlights a shortcoming of the big bang theory?

kaheart [24]

<span>A. How could energy become the matter present today? </span>

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Pangaea was not the first, nor will it be the last, super continent. In the process of continental drift, sometimes chunks of co

Karolina [17]

Answer:

Explanation:

there could be earthquakes or the tectonic plates under can make it fall apart, natural disasters

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3 years ago