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hjlf
2 years ago
15

IN nuclear in oder to slow down fast neutron the target material should contain

Physics
1 answer:
stealth61 [152]2 years ago
8 0

Answer:

it depends if it is alpha ,beta or gamma

Explanation:

if alpha use paper

if beta use some clothing or aluminium

if it is gamma use lead

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A strong lightning bolt transfers an electric charge of about 31 C to Earth (or vice versa). How many electrons are transferred?
olchik [2.2K]

Answer:

m=5.78\times 10^{-3}\ g

n_e=1.935\times 10^{20} is the no. of electrons

Explanation:

Given:

  • quantity of charge transferred, Q=31\ C

<u>No. of electrons in the given amount of charge:</u>

As we have charge on one electron 1.602\times 10^{-19}\ C

so,

n_e=\frac{Q}{e}

n_e=\frac{31}{1.602\times 10^{-19}}

n_e=1.935\times 10^{20} is the no. of electrons

  • Now if each water molecules donates one electron:

Then we require n=1.935\times 10^{20} molecules.

<u>Now the no. of moles in this many molecules:</u>

n_m=\frac{n}{N_A}

where

N_A=6.022\times 10^{23} Avogadro No.

n_m=\frac{1.935\times 10^{20}}{6.022\times 10^{23}}

n_m=3.213\times 10^{-4}\ moles

  • We have molecular mass of water as M=18 g/mol.

<u>So, the mass of water in the obtained moles:</u>

n_m=\frac{m}{M}

where:

m = mass in gram

3.213\times 10^{-4}=\frac{m}{18}

m=5.78\times 10^{-3}\ g

7 0
3 years ago
Conditional waves contain a crest, trough, wavelength, and amplitude<br> True or False?​
AveGali [126]

Answer:

True

Explanation:

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Using this formula a = F/m What acceleration results from exerting a 125N force on a 0.65kg
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Answer:

Acceleration = 192.3 m/s² (Approx.)

Explanation:

Given:

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We know that;

Acceleration = Force / Mas

So,

Acceleration = 125 / 0.65

Acceleration = 192.3 m/s² (Approx.)

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C, they didn't know any better
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Tems11 [23]

You got it right my friend

8 0
3 years ago
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