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2 years ago

12

Like-charged bodies, when brought closer together, will: repel more strongly be neutralized repel less strongly attract more str

ongly

2 answers:

SVETLANKA909090 [29]2 years ago

5 0

Answer:

That's almost the true

Explanation:

it does not happen all the time

gogolik [260]2 years ago

3 0

The answer is A: Repel More Strongly

Explanation: I took the test but two alike magnets will push away form each other

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the average american receives 2.28 mSv dose equivalent from radon each year. Assuming you receive this dose, and it all comes fr

Dmitry [639]

Answer:

The approximate number of decays this represent is $N= 23*10^{10}$

Explanation:

From the question we are told that

The amount of Radiation received by an average american is $I_a = 2.28 \ mSv$

The source of the radiation is $S = 5.49 MeV \ alpha \ particle$

Generally

$1 \ J/kg = 1000 mSv$

Therefore $2.28 \ mSv = \frac{2.28}{1000} = 2.28 *10^{-3} J/kg$

Also $1eV = 1.602 *10^{-19}J$

Therefore $2.28*10^{-3} \frac{J}{kg} = 2.28*10^{-3} \frac{J}{kg} * \frac{1ev}{1.602*10^{-19} J} = 1.43*10^{16} ev/kg$

An Average american weighs 88.7 kg

The total energy received is mathematically evaluated as

$1 kg ------> 1.423*10^{16}ev \\88.7kg --------> x$

Cross-multiplying and making x the subject

$x = 88.7 * 1.423*10^{16} eV$

$x = 126.2*10^{16}eV$

Therefore the total energy deposited is $x = 126.2*10^{16}eV$

The approximate number of decays this represent is mathematically evaluated as

N = $\frac{x}{S}$

Where n is the approximate number of decay

Substituting values

$N = \frac{126 .2*10^{16}}{5.49*10^6}$

$N= 23*10^{10}$

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3 years ago

What causes the inner core to be solid?

natima [27]

Your answer will be (B) - intense pressure.

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2 years ago

A book rests on a table, exerting a downward force on the table. the reaction to this force is:

lapo4ka [179]

The upward force the table exerts on the ground!
Equal and opposite forces.

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3 years ago

Which of the following statements about psychodynamic perspective is not true?

Free_Kalibri [48]

There are NO true statements on that list of choices.

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3 years ago

Who has a greater weight to mass ratio, a person weighing 400 N or a person weighing 600 N? Select one:

avanturin [10]

600 because the weigh more

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2 years ago