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3 years ago

URGENT!

Physics

2 answers:

lubasha [3.4K]3 years ago

7 0

Answer:

Explanation:

garik1379 [7]3 years ago

5 0

Answer:

The correct answer will be option- B

Explanation:

Pseudoscience is the practice of the science which is thought and believed to be a practice of science but is independent of the scientific method.

The practice of the pseudoscience is based on the personal opinions and the belief system but it lacks the evidence which could help form the hypothesis to be tested like the religious practices, astrology and predicting the future based on the dreams.

Since the science of dreams has not been completely understood, lacks scientific evidence and is based on the predictions, therefore, is the correct answer.

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In a double-slit experiment, the third-order maximum for light of wavelength 490 nm is located 15 mm from the central bright spo

jeka94

Answer:

The distance from the central bright spot are $156.8\times10^{-3}\ mm$ and $142.9\times10^{-3}\ mm$ .

Explanation:

Given that,

Wavelength = 490 nm

Distance y= 15 mm

Length L=1.6 m

New wavelength = 670

We need to calculate the distance from the central bright spot

Using formula of distance

$y= \dfrac{m\lambda L}{d}$

$d=\dfrac{m\lambda L}{y}$

Put the value into the formula

$d=\dfrac{3\times490\times10^{-9}\times1.6}{15\times10^{-3}}$

$d=156.8\times10^{-6}\ m$

$d=156.8\times10^{-3}\ mm$

We need to calculate the distance from the central bright spot for new wavelength

Using formula of distance

$d=\dfrac{m\lambda L}{y}$

Put the value into the formula

$d=\dfrac{2\times670\times10^{-9}\times1.6}{15\times10^{-3}}$

$d=142.9\times10^{-6} m$

$d=142.9\times10^{-3}\ mm$

Hence, The distance from the central bright spot are $156.8\times10^{-3}\ mm$ and $142.9\times10^{-3}\ mm$ .

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Most of the world uses fossil fuels because they are

Tasya [4]

They are easy to use and more reliable

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3 years ago

A florescent light tube usually contains what?

Nady [450]

Answer:

mercury vapour

Explanation:

it contains many other gases and it contains mercury vapour

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Claire lost weight thanks to the support and encouragement of her friends. They helped her stick to a healthy diet and pushed he

atroni [7]

Answer:

hello the options to your question is missing below are the options

culture

heredity

physical environment

social environment

answer : social environment

Explanation:

Claire ability to lose weight due to the encouragement and support of her friends shows that she was ability to achieve her goal due to her social circle ( friends ). therefore the face time that helped her lose weight is her social environment and not culture nor any other option as mentioned above.

social environments help/play a vital role in individual's life a lot as long as every human being is a social being

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anzhelika [568]

The short answer is a

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