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2 years ago

Nuclear reactions have many useful applications, but they also have harmful biological effects.

Physics

1 answer:

Katarina [22]2 years ago

5 0

True

Explanation:

Nuclear reactions have many useful applications but they also have harmful biological effects. Nuclear reactions are that occurs in the nucleus of an atoms. They differ from chemical reactions which occurs using valence electrons.

Some uses of nuclear reactions:

They are used for cancer therapy
Radioactive tracers.
Production of energy
Radiometric dating

Some harmful effects:

Uncontrolled nuclear reactions can lead to nuclear wastes in the environment.
They are used in manufacturing nuclear weapons.
They cause destruction of living cells because they produce ionizing radiations.

Learn more;

Nuclear reactions brainly.com/question/2948717

#learnwithBrainly

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A long cylindrical capacitor is made of a central wire of radius a = 2.50 mm surrounded by a conducting shell of radius b = 7.50

asambeis [7]

Answer:

The capacitance per unit length is $5.06\times10^{-11}\ F/m$

(b) is correct option.

Explanation:

Given that,

Radius a= 2.50 mm

Radius b=7.50 mm

Dielectric constant = 3.68

Potential difference = 120 V

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Using formula of charge per length

$\lambda=\dfrac{4\pi\epsilon_{0}\Delta V}{2 ln(\dfrac{r_{2}}{r_{1}})}$

Put the value into the formula

$\lambda=\dfrac{120}{9\times10^{9}\times2 ln(\dfrac{7.50\times10^{-3}}{2.50\times10^{-3}})}$

$\lambda=6.068\times10^{-9}\ C/m$

We know that,

$\lambda=\dfrac{Q}{L}$

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Using formula of capacitance per unit length

$C=\dfrac{\dfrac{Q}{L}}{\Delta V}$

$C=\dfrac{6.068\times10^{-9}}{120}$

$C=5.06\times10^{-11}\ F/m$

Hence, The capacitance per unit length is $5.06\times10^{-11}\ F/m$

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3 years ago

As a gaseous element condenses, the atoms become ________ and they have ________ attraction for one another.

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Answer:

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