3 years ago

What is the rate of change of an object’s velocity per unit of time known as?

Physics

2 answers:

irga5000 [103]3 years ago

6 0

The rate of change of object's velocity per unit of time is known as acceleration.

Hope this helps you.

dimaraw [331]3 years ago

4 0

The rate of change of object's velocity per unit of time is known as acceleration. hope this helps

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Explanation:

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3 years ago

What are the uses of evaporative salts?

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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

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

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

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3 years ago

A football player runs down a field with a speed of 8 m/s. How long will it take him to run 20m?

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