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3 years ago

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1700 J of energy is lost from 0.14 kg object , the temperature decreases from 50°C to 45°C what is the specific heat of this obj

ect, amd what is the material ?

1 answer:

SCORPION-xisa [38]3 years ago

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A 460 nm monochromatic light is split into two beams. The two beams arrive at a point on a screen with a path difference of 920n

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Answer:

phase difference $\Delta \Phi = 12.566$

Explanation:

Phase difference is expressed as $\Delta \Phi$

$\Delta \Phi =\frac {2\pi}{\lambda} \Delta X$

Where,

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$\lambda$ wavelength = 460nm

$\Delta X$ path difference = 920 nm

$\Delta \Phi =\frac {2\pi}{460} *920 = 4\pi$

therefore

phase difference $\Delta \Phi = 12.566$

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Why does a pendulum have periodic motion?

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