3 years ago

Which warning sign suggests being bullied?

Physics

1 answer:

Vikentia [17]3 years ago

6 0

Answer:

when you tell someone over and over to stop bothering you and they dont so i think you should tell a teacher

Explanation:

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melisa1 [442]

The answer is 2.5 times heavier than on Earth !!

so the answer is C !!

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3 years ago

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Photoelectrons are observed when a metal is illuminated by light with a wavelength less than 383 nm. What is the metal's work fu

Ulleksa [173]

Answer:

Work function of the metal is 3.24 eV.

Explanation:

It is given that,

Wavelength, $\lambda=383\times 10^{-9}\ m$

Let W is the work function of the metal. It is given by using Einstein's photoelectric effect equation. It is given by :

$W=\dfrac{hc}{\lambda}$

$W=\dfrac{6.63\times 10^{-34}\times 3\times 10^8}{383\times 10^{-9}}$

$W=5.193\times 10^{-19}\ J$

Since, $1\ eV=1.6\times 10^{-19}\ J$

So, W = 3.24 eV

So, the work function of the metal is 3.24 eV. Hence, this is the required solution.

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3 years ago

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Electrons with energy of 25 eV have a wavelength of ~0.25 nm. If we send these electrons through the same two slits (d = 0.16 mm

kupik [55]

Answer:

The spacing is 5.15 μm.

Explanation:

Given that,

Electron with energy = 25 eV

Wave length = 0.25 nm

Separation d= 0.16 mm

Distance D=3.3 m

We need to calculate the spacing

Using formula of width

$\beta=\dfrac{\lambda D}{d}$

Put the value into the formula

$\beta=\dfrac{0.25\times10^{-9}\times3.3}{0.16\times10^{-3}}$

$\beta=5.15\times10^{-6}\ m$

$\beta=5.15\ \mu m$

Hence, The spacing is 5.15 μm.

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3 years ago

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Answer:

Explanation:Digestive juices secreted by various organs such as salivary glands in the mouth, stomach, liver and pancreas help in the process of digestion of food. Saliva secreted by the salivary glands in the mouth aids in the breakdown of starch present in the food to simple sugar

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What would happen to temperature on the Earth If the Sun’s heat were not distributed throughout the atmosphere?

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It would be hotter near the Earth's equator and colder near Earth's poles.

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